What is X% of Y?

Percentage Change

About This Tool

Calculate percentages, percentage increases, decreases, and differences instantly. Perfect for discounts, tips, grades, statistics, and financial calculations.

Frequently Asked Questions

How do I calculate a percentage?

Enter the percentage and the number, then click Calculate to find what X% of Y equals.

Can I calculate percentage change?

Yes! Use the Percentage Change section to find the increase or decrease between two values.

How do I calculate discounts?

For a 20% discount on $100, enter 20% of 100 to get $20 off, or calculate 80% of 100 for the final price.

What's the difference between increase and decrease?

An increase shows a positive percentage change, while a decrease shows a negative percentage change.

Can I calculate tips?

Yes! For a 15% tip on a $50 bill, calculate 15% of 50.