MojoUtils

Percentage Calculator

Calculate percentages, increases and decreases

Math & Calculators
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Calculate percentages quickly and accurately with our free Percentage Calculator. Whether you need to find what percent of a number is, calculate percentage increase/decrease, or work out a percentage change, this tool handles it all without any formulas.

How to Use

  1. 1Select the type of calculation you need (e.g., "What is X% of Y?").
  2. 2Enter the required values in the input fields.
  3. 3The result is calculated instantly.
  4. 4Read the answer and copy it if needed.

Features

  • Multiple calculation modes: percentage of a number, percentage change, what percent
  • Instant results
  • Shows calculation formula for learning
  • Works for discounts, tips, tax, and statistics
  • Free and no sign-up required

Practical Examples

  • Calculate a sale discount, service fee, tax amount, or price increase without rewriting the formula each time.
  • Compare old and new metrics to report growth or decline accurately.
  • Work out what percentage a partial score, completion count, or budget line represents.

Common Pitfalls

  • Percentage points and percent change are different. Moving from 10% to 15% is +5 percentage points and +50% relative growth.
  • A negative base value can make percentage change hard to interpret.
  • Rounding too early can create visible errors in invoices, reports, or dashboards.

Frequently Asked Questions