Skip to content

Percentage Calculator

Work out X% of Y, what percent X is of Y, percentage change, increases, decreases and percentage difference.

Runs in your browserTwo numbers → Percentages
Loading tool…

How to use the Percentage Calculator

  1. Paste or type your Two numbers into the input area, or open a file from your device.
  2. Adjust the options above the editor if the tool offers any.
  3. Review the Percentages result, then copy it or download it as a file.

Privacy and limitations

  • Your data is processed on your device and is not uploaded to any server.

Frequently asked questions

How is percentage change calculated?

Change = (new − old) ÷ |old| × 100. Going from 20 to 150 is +650%.

Browse all number converters →