Percentage Calculator

Quickly calculate percentages with three different modes. Find what percent one number is of another, calculate percentage increase or decrease, or find the original number from a percentage.

❓ Frequently Asked Questions

How do I calculate 20% of 150? +
Enter 20 in the % field and 150 in the number field. Click Calculate. Result = 30.
How is percentage change calculated? +
Formula: ((New - Old) / Old) × 100