Skip to main content
Mohammed Razi Kallai Logo
Media & Utilities

Percentage Calculator

#13

Solve percentage questions quickly: find percent of a number, reverse percentages, and calculate gains or losses.

Handy for finance, discounts, analytics, and classroom drills. All calculations happen instantly as you type.

Scenarios solved0/3
ModePercent, reverse, change
Inputs active0
What is% of?
is what percent of?
What is the percentage change fromto?

How to Use the Percentage Calculator

Calculate Percentage of a Number

Enter a percentage and a number to find what that percentage of the number is. For example, 20% of 100 = 20.

Find What Percentage

Enter two numbers to find what percentage the first number is of the second. For example, 20 is what % of 100 = 20%.

Percentage Change

Enter an original value and a new value to calculate the percentage change between them.

Common Percentage Calculations

  • 💰 Sales Tax: Calculate tax on purchases
  • 📈 Investment Returns: Find percentage gains or losses
  • 🏆 Grade Calculations: Convert scores to percentages
  • 💡 Tip Calculations: Calculate restaurant tips
  • 📊 Data Analysis: Compare proportions and ratios
  • 🏠 Mortgage Calculations: Interest rates and payments

Percentage Formula Reference

Percentage of a Number

(Percentage ÷ 100) × Number

Example: (20 ÷ 100) × 100 = 20

What Percentage

(Part ÷ Whole) × 100

Example: (20 ÷ 100) × 100 = 20%

Percentage Change

((New - Old) ÷ Old) × 100

Example: ((150 - 100) ÷ 100) × 100 = 50%

Percentage Increase

((New - Old) ÷ Old) × 100

Positive result indicates increase