Percentage Calculator
Calculate percent of a number, what percent one number is of another, and percentage increase or decrease.
What is X% of Y?
-Result
X is what % of Y?
-Percent
% change from X to Y
-Increase / decrease
How to use Percentage Calculator
- Use the first row to find X percent of a number.
- Use the second row to see what percent one number is of another.
- Use the third row for percent increase or decrease.
Features
- Three common sums in one page
- Instant results
- Works with decimals
Supported formats and limitations
If the starting number for percent change is 0, the result cannot be calculated.
How it works
X percent of Y = X / 100 x Y. Percent change = (new - old) / old x 100. Example: 10 percent of 500 is 50, and going from 200 to 250 is a 25 percent increase.
Frequently asked questions
How do I find a discount price?
Find the percent of the price, then subtract it from the price.
What does a negative result mean?
It means a decrease.