Percentage Calculator
Calculate percentages, increases, decreases, and more with ease
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About Percentage Calculator
Our Percentage Calculator is a free online tool that helps you solve various percentage problems quickly and easily. Whether you need to calculate a percentage of a value, find the percentage change between two values, or determine what percentage one number is of another, this calculator provides accurate results instantly.
Find Percentage of a Value
Calculate what percentage of a number is, such as 20% of 150 or 7.5% of 80. Useful for discounts, taxes, and tips.
Calculate Percentage Change
Determine the percentage increase or decrease between two values, ideal for tracking growth rates, price changes, and more.
Find What Percentage X is of Y
Discover what percentage one number is of another, perfect for analyzing proportions, test scores, and statistics.
Educational Tool
Learn how percentages work with clear formulas and explanations that help understand the mathematical concepts.
Percentage Formulas and Examples
What is X% of Y?
Formula: Result = (X × Y) ÷ 100
Example: What is 25% of 200?
Calculation: (25 × 200) ÷ 100 = 50
Percentage Change
Formula: Percentage Change = ((New Value - Original Value) ÷ Original Value) × 100
Example: Calculate the percentage change from 100 to 125.
Calculation: ((125 - 100) ÷ 100) × 100 = 25% increase
X is what % of Y?
Formula: Percentage = (X ÷ Y) × 100
Example: 25 is what percentage of 100?
Calculation: (25 ÷ 100) × 100 = 25%