💯 Percentage Calculator

Three modes — find, compare, and track changes

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💡 Formula: X% of Y
Result = (X ÷ 100) × Y
Example: 15% of 200 = 30
💡 % Change Formula
Change = ((New − Old) ÷ Old) × 100
Positive = increase, Negative = decrease

How to Use the Percentage Calculator

This tool has three modes. "X% of Y" finds a percentage of a number (e.g., 15% of 2000 = 300). "X is ?% of Y" tells you what percentage one number is of another (e.g., 300 is 15% of 2000). "% Change" computes how much a value has increased or decreased between two numbers.

Percentage calculations are used everywhere: discounts while shopping, exam scores, salary hikes, tax computations, interest rates, and statistical analysis.

Frequently Asked Questions

How do I find 20% of 500?

Use the "X% of Y" tab. Enter 20 in Percentage and 500 in Of Value. Result = 100. Formula: (20 ÷ 100) × 500 = 100.

How is percentage change calculated?

% Change = ((New − Old) ÷ Old) × 100. Positive = increase; negative = decrease. Example: 500 to 650 = 30% increase.

What is 300 as a percentage of 1200?

Use the "X is ?% of Y" tab. Enter 300 and 1200. Result: 25%. Formula: (300 ÷ 1200) × 100 = 25%.