What is Percentage Calculator?
Percentages come up all the time — shopping discounts, grades, revenue growth — but the formulas are easy to mix up. The four most common percentage calculations are gathered on one screen: just type numbers to see the result instantly.
How to use
- 1
Enter numbers in the blanks of the calculation you need.
- 2
Results update as you type. Click a result to copy it.
Use cases
Sale prices
See the price of a $59 item at 30% off in “Sale price”.
Revenue growth
Going from 12,000 last month to 15,000 this month is a +25% change.
Test scores
42 correct out of 50 is 84% with “A is what % of B”.
FAQ
What's the formula for percent change?+
(new value − old value) ÷ old value × 100. A negative result means a decrease.
Are percent and percentage points different?+
Yes. Going from 10% to 15% is a 5 percentage-point increase, but a 50% increase as a rate of change.