Calculators & Converters
Percentage Calculator
Work out a percentage of a number, what percent one number is of another, and the change from one value to another.
Free forever.
Result
36
15% of 240
How to calculate a percentage
- Choose what you want: a portion, a share, a change, or a number increased or decreased by a percent.
- Enter the two values. The result updates as you type.
- Use the change mode for before-and-after figures. A fall is shown as a negative percent.
Questions
How is percentage change calculated?
It is (new − original) ÷ original × 100. If the original value is zero, the change is undefined and the tool says so.
What is the difference between change and difference?
Change uses the first number as the baseline. Difference compares the gap with the average of the two numbers, which is useful when neither value is the starting point.
This runs entirely in your browser. Nothing you type is sent to a server.