How to use this calculator
- Enter the original value.
- Enter the new value.
- The percentage change appears instantly.
Example
A price moving from 100 to 125 is a 25% increase. A move from 100 to 75 is a 25% decrease.
How it works
Calculate the percentage increase or decrease from an original value to a new value instantly. Inputs are calculated directly in your browser and the result updates whenever a value changes.
Frequently asked questions
What is the percentage increase formula?
Subtract the original value from the new value, divide by the absolute original value, then multiply by 100.
Can the result show a decrease?
Yes. When the new value is lower, the calculator labels the result as a decrease.