Percentage Calculator
Calculate percentages instantly: find X% of Y, what percent X is of Y, or percentage change. Free, fast, no signup.
What is X% of Y?
X is what % of Y?
Percentage change
How to Calculate Percentages
A percentage is a fraction of 100. To find X% of a number, multiply the number by X/100. For example, 15% of 200 = 200 × 0.15 = 30.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example, 25 is what percent of 200? 25 ÷ 200 × 100 = 12.5%.
What is the formula for percentage change?
Percentage change = ((new value − old value) ÷ |old value|) × 100. A positive result means an increase; negative means a decrease. For example, going from 80 to 100 is a 25% increase, while going from 100 to 80 is a 20% decrease.
What is the difference between percentage and percentile?
A percentage is a fraction of 100 (e.g., 85% on a test means 85 out of 100). A percentile indicates ranking within a group. Scoring in the 85th percentile means you scored higher than 85% of the group, regardless of the actual score.
How do I calculate a tip percentage?
Multiply the bill amount by the tip percentage divided by 100. For example, a 20% tip on a $45 bill: 45 × 0.20 = $9.00. Use the "What is X% of Y?" calculator above for any tip amount.