How is percentage change calculated?
The difference between the two values is divided by the starting value, then multiplied by 100.
Numbers / Quick calculation
Percentage calculator
Find a percentage of a number, work out what percentage one number is of another, or calculate the change between two values.
Result
The result updates as you type.
How it works
- Choose the calculation that matches the question.
- Enter the two values. The result appears instantly; nothing is sent to a server.
- Use Reset to clear the fields and start again.
Questions
Why can the result be rounded?
The display uses a localized number format with a limited number of decimal places. The underlying calculation is not rounded.