Calculate a percentage increase or decrease
Enter a starting value and a percentage. A positive rate calculates an increase; a negative rate calculates a decrease.
Enter a value and percentage.
How to calculate the change
- How to calculate the change
- A 10% increase on 100 gives 110. A 5% decrease on 100 gives 95.
This is arithmetic only. It does not account for taxes, fees, interest or pricing rules.
Processing and privacy
Text generation and clock calculations run in your browser; entered values are not sent to the server for these tools.
Frequently asked questions
How is the change calculated?
Multiply the starting value by the percentage and divide by 100.
Can successive percentage changes be added?
Not always. A 10% increase followed by a 10% decrease on 100 gives 99 because the second change applies to 110.
Calculate a percentage increase or decrease — Português (Brasil)