Free · no signup · browser-local
Percentage Increase or Decrease Between Two Values
Enter a positive starting value and a new value to calculate the signed percentage change. For example, a rise from 80 to 100 is a 25% increase.
Your values
Calculated result
Increase
(new − original) ÷ original × 100
Getting started
Enter positive original and nonnegative new values to inspect the signed change.
Before you use the result
A zero or negative baseline has no supported percentage-change interpretation here.
Try an example
Change from 80 to 100 to see a 25% increase.
How it works
Percentage change equals (new − original) ÷ original × 100.
Frequently asked questions
See the increase or decrease between an original and a new value.
How do I use Percentage Change Calculator?
Enter positive original and nonnegative new values to inspect the signed change.
Does this tool upload my data?
Inputs and files are processed in your browser. Page-view analytics do not contain your tool input.
What should I check before using the result?
A zero or negative baseline has no supported percentage-change interpretation here.