Conversion Deck

Percentage Calculator

Find percent of a number, apply an increase/decrease, compute percentage change, or do a reverse percent.

% of a number

%
Result: —

Increase / Decrease

%
New value: —

Percentage change

→
Change: —

Reverse percent

%
Answer: —

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Percentage Calculator

The percentage calculator makes it simple to find percentages, percentage change, and reverse percentage values instantly. Whether you’re calculating discounts, profit margins, grade scores, or data changes, this tool gives you fast and accurate results.

Common formulas include:

For example, 25 is 50% of 50, and an increase from 40 to 50 is a 25% rise. This calculator handles both increases and decreases with automatic updates.

Explore related tools like the fraction to decimal converter or the loan calculator for financial calculations. All tools on Conversion Deck are free, precise, and designed to make math simple.