Percentage Calculator
A complete suite of percentage tools for all your needs. Quickly solve 'what is X% of Y?', 'X is what percent of Y?', or calculate the percentage change (increase or decrease) between two numbers. Perfect for discounts, tips, and statistical analysis.
Inputs
Enter the required values to calculate.
Result
The calculated result will appear here.
More Information
Understanding the Percentage Calculator
Percentages are a fundamental part of everyday math, from shopping discounts to financial reports. This tool provides three common percentage calculations in one place.
1. What is X% of Y?
This calculation finds a specific percentage of a given number. It's useful for figuring out tips, commissions, or sales tax.
Formula: Result = (Percentage / 100) * Value
2. X is what % of Y?
This calculation determines what percentage one number is of another. It's perfect for figuring out how much of a task is complete or your score on a test.
Formula: Result = (Part / Whole) * 100
3. Percentage Change
This calculation finds the percentage increase or decrease from an original value to a new value. It's used to track stock price changes, population growth, or changes in your own metrics like weight.
Formula: Result = ((New Value - Original Value) / Original Value) * 100
For more complex math, try our Scientific Calculator.