Percentage Calculator

Calculate percentages instantly — find a percentage of a number, figure out what percent one number is of another, or calculate percentage change.

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What is X% of Y?

Example: What is 15% of 200? → 30

What is % of ?
Please enter valid numbers in both fields.

X is what percent of Y?

Example: 30 is what percent of 200? → 15%

is what % of ?
Please enter valid numbers. Y cannot be zero.

Percentage Change (Increase / Decrease)

Example: from 80 to 100 → +25% increase

From to
Please enter valid numbers. "From" cannot be zero.

Add or Remove a Percentage

Example: 200 + 15% = 230  |  200 − 15% = 170

%
Please enter valid numbers in both fields.
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📊 Common Percentage Reference Table

Percentage Of 100 Of 200 Of 500 Of 1,000
1%12510
5%5102550
10%102050100
15%153075150
20%2040100200
25%2550125250
30%3060150300
50%50100250500
75%75150375750
100%1002005001,000

% of a Number

Result = (P ÷ 100) × N
15% of 200 = (15 ÷ 100) × 200 = 30

What % is X of Y

Result = (X ÷ Y) × 100
30 is what % of 200? = (30 ÷ 200) × 100 = 15%

Percentage Change

Result = ((New − Old) ÷ Old) × 100
80 to 100 = ((100 − 80) ÷ 80) × 100 = +25%

📖 How to Use This Calculator

1
Choose the type of calculation Select the tab that matches your question — "% of a Number", "What % is X of Y?", "% Change", or "Add / Remove %".
2
Enter your numbers Type the numbers into the input fields. Decimals are supported — you can enter values like 12.5 or 0.75.
3
Click Calculate Your result appears instantly with a formula explanation so you can see exactly how the answer was calculated.
4
Use for any purpose Tips, discounts, taxes, grades, statistics, salary changes — percentages come up everywhere. Bookmark this page for quick access.

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