Percentage Calculator

Q: How do you calculate X% of Y?

To calculate X% of Y, multiply Y by X/100. Example: 20% of 150 = 30.

Q: How to calculate percentage increase or decrease?

Percentage increase or decrease is calculated using ((New - Old) / Old) × 100.

Q: What is percentage change?

Percentage change measures how much a value increases or decreases relative to its original value.

Calculate percent values, percent change, and compare numbers easily.

Select Calculation Type

Value 1

Value 2

How This Percentage Calculator Helps You

Percentage calculations are essential in finance, business, schools, discounts, growth rates, GST, and daily life. This calculator supports the most commonly used percentage operations with instant results.

Find X% of any number instantly.
Check how much percentage one number is of another.
Calculate percentage increase or decrease.
Useful for shopping, business, and tax calculations.
Accurate results with clean and simple UI.

Frequently Asked Questions

1. How do you calculate X% of Y?

Multiply Y by X/100. Example: 20% of 150 = 150 × 0.20 = 30.

2. How to calculate percentage increase or decrease?

Use: ((New - Old) / Old) × 100.

3. What is percentage change?

Percentage change tells how much a value increased or decreased compared to its original amount.