Percentage Calculator

Percentage Calculator

Calculate percentages quickly and easily with our free online tool. Solve percentage problems for discounts, tips, increases, decreases, and more.

What is X% of Y?

% of ?

X is what % of Y?

of ?

Increase/Decrease by Percentage

Understanding Percentages

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%". Percentages are useful for comparing proportions and calculating changes.

Common Percentage Calculations

  • Percentage of a number: What is 15% of 200? (Answer: 30)
  • Percentage proportion: 25 is what percent of 50? (Answer: 50%)
  • Percentage increase: What is a 10% increase of 80? (Answer: 88)
  • Percentage decrease: What is a 20% decrease of 150? (Answer: 120)

Real-World Applications

Finance

Calculate interest rates, loan payments, investment returns, and discounts.

Statistics

Analyze survey results, population changes, and data trends.

Business

Determine profit margins, sales tax, employee raises, and performance metrics.

Education

Calculate grades, test scores, and academic progress.

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