How to Calculate Percentage - Percentage Calculator

Learn how to calculate percentage with our professional calculator. Supports percentage increase, decrease, change, compound growth and more with step-by-step solutions.

Basic

X is what % of Y

Calculate what percentage one number is of another

Example:

25 is 25% of 100

Number (X)*

Total (Y)*

Basic

What is X% of Y

Calculate a specific percentage of a number

Example:

25% of 100 = 25

Original Value*

Percentage (%)*

Basic

Percentage Increase

Increase a number by a percentage

Example:

100 + 25% = 125

Original Value*

Increase By (%)*

Basic

Percentage Decrease

Decrease a number by a percentage

Example:

100 - 25% = 75

Original Value*

Decrease By (%)*

How to Calculate Percentage - Usage Guide

Basic Calculations

• Enter numbers in input fields
• Results calculate automatically
• View step-by-step solutions
• Copy results or formulas

Advanced Features

• Compound growth calculations
• Tax and financial calculations
• Percentage change analysis
• Detailed breakdown views

Tips & Tricks

Use keyboard to navigate between fields. Press Enter to calculate, or Escape to clear current calculation. All results include detailed step-by-step explanations on how to calculate percentage.