Calculators • Fast & Accurate

Percentage Calculator

Calculate percentages, percentage increases, percentage decreases, differences, and discounts effortlessly. Solve "What is X% of Y?", calculate margin markups, and compute exam scores instantly.

Calculate percentages, percentage increases, percentage decreases, differences, and discounts effortlessly. Solve "What is X% of Y?", calculate margin markups, and compute exam scores instantly.

Percentage of a Number

Result:
0.00

What Percentage is X of Y?

Result:
0.00%

Percentage Increase/Decrease

Result:
+0.00%

How it works

  1. Percentage of a Number: Calculate what X% of a number is
  2. What Percentage is X of Y: Find what percentage X is of Y
  3. Percentage Increase/Decrease: Calculate the percentage change between two values

Examples

  • 20% of 100 = 20
  • 25 is 50% of 50
  • 100 to 120 = +20% increase

How to Use Percentage Calculator Online

  1. Select calculation mode: Choose "Percentage of a number", "What percentage is X of Y?", or "Percentage increase/decrease".
  2. Enter your values: Input the numbers into the interactive calculation fields.
  3. Instant result: View the calculated percentage and step-by-step mathematical breakdown in real time.

ClickBasic tools run 100% securely with zero installation, no registration, and no limits.

Key Features of ClickBasic Percentage Calculator

3 Common Percentage Modes: Covers discounts, tax calculations, proportional ratios, and percentage differences.
Real-Time Calculation: Results update instantly as you type without page reloads.
Mobile & Tablet Ready: Clean, responsive UI with large, easy-to-tap inputs for on-the-go shopping calculations.
100% Free & No Ads Interruption: Quick answers without intrusive popups or paywalls.

Frequently Asked Questions

Divide the part (X) by the total (Y) and multiply by 100: (X / Y) × 100. For example, 30 of 150 is (30/150) × 100 = 20%.

Subtract the old price from the new price, divide by the old price, and multiply by 100.

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