ToolSnippet
🧮Part of Calculators & Math Tools

Quick percentage calculations

Calculate what percent X is of Y, find percentage change between two values, or compute a percentage of a number instantly.

About This Tool

Percentage Calculator covers the three most common percentage problems: finding a percent of a number, finding what percent one number is of another, and calculating percentage change between two values.

Key Features

Calculate X% of a number
Find what percent X is of Y
Calculate percentage increase or decrease
Decimal precision support
Three calculator modes in one tool

How to Use

  1. 1Enter values in any of the three calculator modes.
  2. 2The result updates automatically.
  3. 3Switch between modes as needed.

Why Use ToolSnippet Percentage Calculator?

Handles the three most common percentage problems in one tool.
No need to remember formulas — just plug in numbers.
Instant calculations entirely in your browser.

Tips for Best Results

  • Use percentage change to compare sales figures month over month
  • Use 'X% of Y' to calculate tips, discounts, and tax amounts
  • Negative percentage change means a decrease

Frequently Asked Questions

How is percentage change calculated?

Percentage change = ((New − Old) / |Old|) × 100. A positive result means an increase, negative means a decrease.

Can it handle decimal percentages?

Yes, both input values and results support decimals.

What is a reverse percentage?

A reverse percentage finds what percent one number is of another, e.g. what percent is 25 of 200?

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