Percentage Calculator
Calculate percentages, percentage changes, and results after adding or subtracting a percentage.
Choose a calculation
Result
Enter values to see the result.
Straightforward percentage calculations
The calculator finds a percentage of a number, shows one value as a percentage of another, calculates percentage change, and adds or subtracts a percentage. Results update as soon as you enter values.
Percentage change uses the formula (new − original) / original × 100. The calculation is undefined when the original value is zero.
How it works
- 1Choose the percentage calculation you need.
- 2Enter two values.
- 3Review the formatted result immediately.