Percentage Calculator

Calculate percentages quickly and easily. Find percentages, percentage changes, increases, decreases, and percentage of any number.

Choose Calculation Type

What is X% of Y?

Calculate what percentage of a number equals another number

What is % of ?

Or: X is what % of Y?

is what % of ?

Results

Answer

25% of 200 is 50

Calculation

25 ÷ 100 × 200 = 50

Quick Reference

25% =

0.25 or 1/4

50% =

0.5 or 1/2

75% =

0.75 or 3/4

100% =

1.0 or 1/1

Common Percentage Examples

Real-world examples of percentage calculations you might encounter

🛒 Shopping Discounts

A $80 jacket is 25% off. What's the discount amount and final price?

Discount: $80 × 25% = $20

Final price: $80 - $20 = $60

💰 Tip Calculator

Restaurant bill is $45. You want to tip 18%. How much is the tip?

Tip: $45 × 18% = $8.10

Total: $45 + $8.10 = $53.10

📊 Test Scores

You got 42 out of 50 questions correct. What's your percentage score?

Score: (42 ÷ 50) × 100% = 84%

📈 Investment Growth

Investment grew from $1,000 to $1,200. What's the percentage increase?

Change: ($1,200 - $1,000) ÷ $1,000 × 100%

Growth: 20%

💳 Sales Tax

Item costs $25. Sales tax is 8.5%. What's the total cost?

Tax: $25 × 8.5% = $2.13

Total: $25 + $2.13 = $27.13

🏠 Interest Rate

Loan of $5,000 at 6% annual interest. What's the yearly interest?

Interest: $5,000 × 6% = $300/year

Percentage Formulas

Essential formulas for percentage calculations

Basic Formulas

Percentage of a number:

Percentage × Number ÷ 100

Example: 25% of 200 = 25 × 200 ÷ 100 = 50

Number as percentage:

(Part ÷ Whole) × 100

Example: 50 is what % of 200 = (50 ÷ 200) × 100 = 25%

Change Formulas

Percentage change:

(New - Old) ÷ Old × 100

Example: From 100 to 125 = (125-100) ÷ 100 × 100 = 25%

Percentage increase:

Original × (1 + Percentage ÷ 100)

Example: 100 + 25% = 100 × (1 + 25 ÷ 100) = 125

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