Percentage Increase Calculator
Use this free percentage increase calculator to calculate percent increase from an old value to a new value. It works for salary raises, rent increases, price increases, bills, business revenue growth, stock value growth, grades, and everyday percentage change questions in the US.
Calculate Percentage Increase from Old Value to New Value
Add a Percentage Increase
Use this percent increase calculator section to find the new value after adding a percentage increase.
Find Original Value Before Increase
Use this original value before percentage increase calculator to work backward from a final value.
What Is a Percentage Increase Calculator?
A percentage increase calculator helps you find how much a value increased compared to the original value. Instead of only showing the difference between two numbers, it shows the increase as a percentage of the old value. This is useful for salary raises, rent increases, price increases, bills, business revenue growth, stock value growth, school grades, and general number changes.
This tool can also work as a percentage change calculator because it automatically detects whether the new value increased, decreased, or stayed the same.
Percentage Increase Formula
The standard percentage increase formula is:
Percentage Increase = ((New Value - Old Value) / Old Value) × 100
- Old value means the starting number.
- New value means the updated number.
- The difference is the increase amount.
- Dividing by the old value shows the change compared to the original base.
How to Calculate Percentage Increase
- Enter the old value.
- Enter the new value.
- Subtract the old value from the new value.
- Divide the increase by the old value.
- Multiply by 100.
- Read the percentage increase result.
Percentage Increase Example
Suppose the old value is 100 and the new value is 125. The difference is 25. The percentage increase is 25 / 100 × 100 = 25%.
This means the value increased by 25% compared with the original value.
Salary Increase Percentage Calculator
US employees can use this salary increase calculator to calculate a raise percentage from a current salary to a new salary. For example, if your salary goes from $55,000 to $60,000, the calculator shows the annual raise amount, percentage increase, monthly increase, bi-weekly increase, and weekly increase.
Rent Increase Percentage Calculator
Renters can use this rent increase calculator to find how much monthly rent increased and how much extra it costs per year. For example, if rent rises from $1,500 to $1,650, the increase is $150 per month and $1,800 per year.
This calculator does not check local rent control laws. Always verify your lease and local rules.
Price Increase Calculator
A price increase calculator is helpful for shoppers and business owners. You can calculate grocery price changes, subscription price increases, product price changes, service cost increases, and other everyday expenses.
Business Growth Percentage Calculator
Small business owners can use this business growth calculator to calculate revenue growth, sales growth, or profit growth. Enter the old revenue and new revenue to find the revenue growth amount and percentage growth.
Percentage Increase vs Percentage Decrease
Percentage increase means the new value is higher than the old value. Percentage decrease means the new value is lower than the old value. This increase percentage calculator automatically detects whether the value increased, decreased, or stayed the same.
Common Uses of Percentage Increase in the US
Salary Raise Percentage
Calculate how much your salary increased after a raise or job offer.
Rent Increase Percentage
Check how much your monthly rent increased compared with your previous rent.
Mortgage Payment Increase
Compare old and new monthly housing payments.
Utility Bill Increase
Find the percent increase in electric, gas, water, phone, or internet bills.
Grocery Price Increase
Calculate how much food or household product prices have changed.
Business Revenue Growth
Measure sales, revenue, or profit growth from one period to another.
Stock Price Growth
Compare old and new stock values to estimate percentage growth.
School Grade Improvement
Calculate the percent increase from one score to a higher score.
Insurance Premium Increase
Find how much your car, home, or health insurance premium increased.
Subscription Cost Increase
Calculate increases in streaming, software, gym, or membership costs.
Tips for Reading Percentage Increase Results
A small dollar increase can be a large percentage increase when the original value is small. For example, an increase from $5 to $10 is only $5 more, but it is a 100% increase. A large dollar increase can be a smaller percentage when the original value is large. For example, an increase from $10,000 to $10,500 is $500 more, but it is only a 5% increase.
Frequently Asked Questions
What is percentage increase?
Percentage increase is the amount a value rises compared with its original value, expressed as a percentage.
How do I calculate percentage increase?
Subtract the old value from the new value, divide the result by the old value, and multiply by 100.
What is the percentage increase from 100 to 125?
The percentage increase from 100 to 125 is 25% because the increase is 25 and 25 divided by 100 equals 0.25.
What is the formula for percentage increase?
The formula is: Percentage Increase = ((New Value - Old Value) / Old Value) × 100.
Can I use this calculator for salary raises?
Yes. Select Salary and USD to calculate your raise percentage, annual increase, monthly increase, bi-weekly increase, and weekly increase.
Can I use this calculator for rent increases?
Yes. You can calculate the percentage rent increase, monthly rent increase, and annual rent increase. Always check your lease and local rent rules.
Can I use this calculator for price increases?
Yes. It works as a price increase calculator for products, groceries, subscriptions, services, and other costs.
Why can’t the old value be zero?
Percentage increase compares the change to the old value. Dividing by zero is not mathematically valid, so the old value cannot be zero.
What is the difference between percentage increase and percentage change?
Percentage increase only describes an upward change. Percentage change can describe an increase, decrease, or no change.
How do I calculate the new value after a percentage increase?
Use this formula: New Value = Original Value + (Original Value × Percentage Increase / 100).
How do I find the original value before a percentage increase?
Use this formula: Original Value = Final Value / (1 + Percentage Increase / 100).
Is this calculator free to use?
Yes. This online percentage increase calculator is free to use.
