Percent
Change.
Compare two values to see the signed change as a percentage of the original. Positive = increase, negative = decrease.
Percent change formula
% Change = (V₂ − V₁) / |V₁| × 100
The sign of the result tells you direction: positive is an increase, negative is a decrease.
Frequently asked questions
What does Percent Change Calculator do?
Signed percent change between any two values. The whole thing runs in your browser tab, so it is ready the moment the page finishes loading.
Is Percent Change Calculator free to use?
Yes. Percent Change Calculator is completely free on ToolMunch — no trial, no premium tier holding back the main feature, and no daily or hourly cap on how many times you can use it.
Do I need to create an account or sign up?
No. There is no account, no email address, and no login. Open Percent Change Calculator, do the job, and take the result — nothing is gated behind a signup form.
Are the numbers I enter sent to a server?
No. Percent Change Calculator runs entirely inside your browser tab, so what you type never leaves your own device. Nothing is uploaded, which means there is no copy of it on a server to worry about.
Does Percent Change Calculator work on Mac, Windows, and phones?
Yes. Percent Change Calculator runs in any modern web browser on Windows, macOS, Linux, Chromebook, Android, and iOS. There is nothing to download or install.
Can I use it as many times as I want?
Yes. There is no queue, no per-hour quota, and no counter that runs out — run Percent Change Calculator as often as the work needs.