Percentage Calculator
Find a percentage of a number, work out percentage change, or reverse a percentage.
20% of 150 is
Result
30
25 is what percent of 200?
Result
12.5%
Percent change from 80 to 100
Result
+25%
Frequently asked questions
How do I calculate a percentage increase?
Subtract the original value from the new value, divide the result by the original value, then multiply by 100 to get the percentage increase.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100 — for example, 25 out of 200 is (25 ÷ 200) × 100, which equals 12.5%.