About Percentage Calculator

Three calculators in one: find what X% of a number is, calculate what percentage one number is of another, and compute percentage increase or decrease between two values. Super useful for calculating discounts, tip amounts, tax percentages, grade scores, investment returns, and statistical changes. Type in any two values and the answer appears instantly.

How to Use Percentage Calculator

1. 1Select the calculation mode: Find X% of a number, What % is A of B, or % Increase/Decrease
2. 2Enter your values — the result updates automatically as you type
3. 3For % change, enter the old and new values to see the increase or decrease
4. 4Copy the result with one click for use in other applications

When to Use Percentage Calculator

• ▸Calculating sale discounts — see exactly how much you save
• ▸Determining what percentage a test score or assignment grade represents
• ▸Computing percentage growth for investments, revenue, or metrics
• ▸Working out tip amounts, tax additions, and commission splits

Frequently Asked Questions

What's the difference between percentage points and percent?

Percent represents a ratio (like 10% of 100 = 10), while percentage points represent the absolute difference between two percentages (like 30% to 40% = +10 percentage points, which is a 33.3% increase). This calculator handles both.

Can I use decimal values?

Yes — enter any decimal precision for both the percentage and the base number. The calculator handles floating-point values accurately.