Calculate percentages instantly: of, reverse %, increase/decrease, and percent change. Free and ad-light.
A multi-mode percentage workspace for daily math. Switch between classic percent calculations, increase/decrease scenarios, and reverse discount questions such as “Final is 80 after 20% off — what was original?”. Session history is tracked automatically while you work and can be cleared anytime. Everything runs in your browser in real time.
Got questions? We’ve got answers. Here are some of the most common inquiries about Percentage Calculator.
X% of Y
X is % of Y
% change
Increase
Decrease
Reverse %
Result
50
25% of 200 is 50.
Formula: 25% × 200