Percentage Calculator

How the calculation works

The tool switches formulas depending on the selected mode, but each one is based on standard percentage math.

Mode 1: X ÷ 100 × Y | Mode 2: X ÷ Y × 100 | Mode 3: ((Y - X) ÷ X) × 100

Use it for discounts, tax checks, markups, comparisons, and fast math when you need a percentage answer immediately.

What does mode one do?

Mode one calculates what X percent of Y equals.

What does mode two do?

Mode two finds what percent X is of Y.

What does mode three do?

Mode three calculates the percentage change from X to Y.

Can I use decimals?

Yes. The calculator accepts decimal values in both fields.

Is this useful for sales tax?

Yes. It helps with percentages, discounts, taxes, and quick comparisons.