Percentage Calculator
Calculate percentages in multiple ways: find X% of Y, find what percent X is of Y, or calculate percentage change.
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How to Calculate
Percentage = (Part / Whole) × 100
A percentage expresses a number as a fraction of 100. To find X% of Y, multiply Y by X/100. To find what percent X is of Y, divide X by Y and multiply by 100.
Frequently Asked Questions
How do I calculate a percentage of a number?
Multiply the number by the percentage expressed as a decimal. For example, 25% of 200 = 200 × 0.25 = 50.
How do I calculate percentage change?
Percentage change = ((new value - old value) / old value) × 100. A positive result is an increase, a negative result is a decrease.
What is the difference between percentage and percentile?
A percentage represents a fraction of 100 (e.g., 75% = 75/100). A percentile indicates a position in a ranked dataset (e.g., 90th percentile means you scored higher than 90% of people).
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