Percentage Calculator

Calculate percentage values, percentage increase/decrease, and "what percentage is X of Y" instantly.

Loading interactive Percentage Calculator interface...

How to Use Percentage Calculator

  1. Select calculation mode: "What is X% of Y", "X is what % of Y", or "% Increase / Decrease".
  2. Enter the numbers in the respective input boxes.
  3. View the instant result, step-by-step formula breakdown, and mathematical representation.

Technical Specifications & Formula

X% of Y = (X × Y) / 100; Percentage Difference = ((Y - X) / X) × 100%.

Frequently Asked Questions

How do you calculate percentage increase?

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

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