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Percentage Calculator

Calculate percentages with step-by-step solutions

Calculate: What is
% of
?

How to Use This Calculator

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What is X% of Y?

Use this mode when you need to find a percentage of a number. For example, "What is 15% of 200?"

Example Problems:

  • Calculate a 20% tip on a $50 bill
  • Find 15% of your test score to see your grade
  • Determine a 25% discount on a $80 item

X is what % of Y?

Use this mode to find what percentage one number is of another. For example, "30 is what % of 200?"

Example Problems:

  • You scored 45 out of 50 on a test. What's your percentage?
  • You saved $120 out of a $600 goal. What percentage is that?
  • 30 students passed out of 40. What's the pass rate?

Percentage Change

Use this mode to calculate percentage increase or decrease between two values. For example, "From 200 to 230."

Example Problems:

  • Stock price changed from $100 to $115. What's the % change?
  • Your grade improved from 75 to 90. What's the % increase?
  • Population decreased from 10,000 to 8,500. What's the % decline?

❓ Frequently Asked Questions

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Educational Disclaimer

This calculator is provided for educational purposes and homework assistance. While we strive for accuracy, please verify critical calculations independently. Results should not be used as the sole basis for important financial, academic, or professional decisions. Always check your work and consult with appropriate professionals when needed.