Solve any percentage problem instantly: find a percentage of a number, percentage change, or what percent one number is of another.
15% of 200 is
30
How the Percentage Calculator works
Pick the type of percentage problem you're solving, enter your two numbers, and the result updates instantly. All three common percentage calculations — finding a percentage of a number, finding what percent one number is of another, and calculating percentage change — are covered in one tool.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage, then divide by 100. For example, 15% of 200 is (15 × 200) ÷ 100 = 30.
How do I find percentage change?
Subtract the original value from the new value, divide by the original value, then multiply by 100. A positive result is an increase; a negative result is a decrease.
How do I find what percent one number is of another?
Divide the first number by the second, then multiply by 100. For example, 30 out of 200 is (30 ÷ 200) × 100 = 15%.