Percentage Calculator
What is X% of Y?
Find a percentage of any number
Result
50
25% of 200 is 50
Instant Results
Calculations update in real-time as you type — no need to press a button.
4 Calculation Modes
Percentage of a number, increase/decrease, change, and difference — all in one tool.
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What is a Percentage?
A percentage is a number expressed as a fraction of 100. It is often denoted using the percent sign (%). Percentages are used to express proportions, compare quantities, and describe changes in values. They are fundamental in finance, statistics, science, and everyday life.
Percentage Formulas
% of a Number
Result = (Percentage / 100) × Number% Increase
New Value = Number × (1 + Percentage / 100)% Change
Change = ((New − Old) / |Old|) × 100%% Difference
Difference = (|V1 − V2| / ((V1 + V2) / 2)) × 100%Frequently Asked Questions
Percentage Calculator
Calculate percentages instantly — find % of a number, percentage change, increase/decrease, and difference between two values.