Percentage Calculator
Calculate percentages
How Percentage Calculation Works
The Percentage Calculator handles all common percentage operations: finding a percentage of a number, calculating what percentage one number is of another, and determining percentage change between two values. It provides instant results for everyday math, business, and academic use.
Formula
Percentage = (Part / Whole) x 100 | Percentage Change = ((New - Old) / Old) x 100
Key Features
- ✓Calculate percentage of any number
- ✓Find what percentage X is of Y
- ✓Compute percentage increase or decrease
- ✓Handles decimal percentages with precision
Pro Tip
For quick mental math: to find 15% of a number, calculate 10% (move decimal left) plus half of that (5%). For example, 15% of 80 = 8 + 4 = 12.
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