What is X% of Y?
Find a percentage of any number
Result
50
25% of 200 is 50
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What is a Percentage?
A percentage is a number expressed as a fraction of 100, denoted using the percent sign (%). Percentages are one of the most practical mathematical tools in daily life — used in finance to express interest rates and returns, in retail to calculate discounts and taxes, in science to describe concentrations and statistics, and in everyday decisions like splitting a bill or calculating a tip. Understanding how to work with percentages gives you a clearer picture of numbers and helps you make smarter decisions.
Percentage Formulas
% of a Number
Result = (Percentage / 100) × Number% Increase / Decrease
New = Number × (1 ± Percentage / 100)% Change
Change = ((New − Old) / |Old|) × 100%% Difference
Diff = (|V1 − V2| / ((V1 + V2) / 2)) × 100%Frequently Asked Questions
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