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Percentage Calculator

Calculate percentages, percentage changes, and find what percent one number is of another with step-by-step solutions. Perfect for students, business professionals, shoppers, and anyone needing quick and accurate percentage calculations. Supports all common percentage operations including discounts, tax calculations, grade percentages, and growth rates.

Percentage Calculator

Calculation Type

Your Results

50
Percentage Of

Calculation Details

Percentage:25%
Of Value:200
Result:50

Common Percentage Calculations

Basic Calculations

Percentage Of25% of 200

Find what percentage of a number equals

Result: 50

What Percent50 is ? % of 200

Find what percent one number is of another

Result: 25%

Percentage Change100 to 120

Calculate increase or decrease percentage

Result: +20%

Advanced Operations

Percentage Increase100 + 20%

Add percentage to original value

Result: 120

Percentage Decrease100 - 20%

Subtract percentage from original value

Result: 80

Compound CalculationsMultiple steps

Chain multiple percentage operations

Use results for next calculation

How to Calculate Percentages

Basic Formula

Percentage = (Part / Whole) × 100
Part = (Percentage × Whole) / 100
Whole = (Part × 100) / Percentage
1

Identify the Values

Determine what you know and what you need to find

2

Choose the Right Formula

Select the appropriate calculation type from the dropdown

3

Enter Your Numbers

Input the values and let the calculator do the work

Real-World Applications

💰 Finance & Shopping

  • • Calculate discounts and sales prices
  • • Determine tax amounts
  • • Calculate interest rates and returns
  • • Compare investment performance

📊 Business & Analytics

  • • Analyze growth rates
  • • Calculate profit margins
  • • Track performance metrics
  • • Measure conversion rates

🎓 Education & Grading

  • • Calculate test scores and grades
  • • Determine class averages
  • • Track academic progress
  • • Analyze improvement rates

📈 Statistics & Research

  • • Calculate survey results
  • • Analyze data trends
  • • Determine sample sizes
  • • Express probabilities

Example Calculations

Case 1: Shopping Discount

Scenario: 25% off a $80 jacket
Calculation: Percentage decrease
Input: $80 - 25%
Discount Amount: $20
Final Price: $60
Savings: $20 (25%)

Use Case: Compare discounts across different stores and calculate final prices.

Case 2: Grade Calculation

Scenario: 85 points out of 100
Calculation: What percent
Input: 85 is ?% of 100
Percentage: 85%
Letter Grade: B
Points Missed: 15 (15%)

Use Case: Convert test scores to percentages and track academic performance.

Case 3: Investment Growth

Scenario: $1000 grew to $1200
Calculation: Percentage change
Input: From $1000 to $1200
Growth: +20%
Profit: $200
ROI: 20% return

Use Case: Analyze investment performance and compare different investment options.

Related Calculators

Frequently Asked Questions

What is a percentage?▼
A percentage is a way of expressing a number as a fraction of 100. It is denoted using the percent symbol (%). For example, 25% means 25 out of 100, or 25/100, or 0.25.
How do you calculate a percentage?▼
To calculate a percentage: (Part/Whole) × 100 = Percentage. For example, if you scored 85 out of 100 on a test: (85/100) × 100 = 85%.
How do you calculate percentage change?▼
Percentage change = ((New Value - Old Value) / Old Value) × 100. If the result is positive, it's an increase. If negative, it's a decrease.
What's the difference between percentage and percentage point?▼
A percentage point is the arithmetic difference between two percentages. For example, if unemployment rises from 5% to 7%, that's a 2 percentage point increase, but a 40% relative increase.
What are common percentage calculations?▼
Common calculations include: finding what % one number is of another, calculating percentage increase/decrease, finding a percentage of a number, calculating tips, discounts, tax rates, and interest rates.
Percentage Calculator