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Utilnivo

Calculators

Utilnivo

Percent Change Calculator

Calculate percent increase or decrease between any two values.

No registration
  • On your device

Browse more in Calculators or all tools.

What is a percentage calculator?

A percentage calculator solves percent-of, percent change, and reverse-percent math instantly. Useful for discounts, tips, grades, and growth rates.

Private on your device

Your information stays on your device and is not uploaded.

Related tools

This percent change calculator automatically shows whether values rose or fell and by what percentage. Enter before and after amounts for prices, metrics, grades, or weights.

Percent change is not symmetric—a 50% increase followed by a 50% decrease does not return to the start.

How to use this tool

Enter the earlier value and the later value. Read signed percent change and absolute difference.

Worked example

Example: 75 to 90 is a +20% change; 90 to 75 is a −16.67% change (relative to each starting point).

When to use this

  • Month-over-month KPI reporting.
  • Before/after experiment results.
  • Price history comparisons.

Common examples

  • What is 15% of 200? → 30 (discount or tip on a subtotal).
  • 45 is what percent of 180? → 25% (test score or completion rate).
  • Price rose from $80 to $100 → 25% percent increase.
  • Sale price $89 with 30% off → $62.30 before tax.
  • Team finished 18 of 24 tasks → 75% completion for status report.

Common mistakes

  • Swapping before and after values.
  • Averaging two percent changes incorrectly.
  • Using ending value as denominator.

How it works

Supports five percentage modes: find X% of Y, find what percent X is of Y, percent change between two values, increase Y by X%, and decrease Y by X%.

Limitations

Handles common percentage math only. Rounding differences may appear when chaining multiple percentage operations.

Privacy and file handling

Your data stays on your device and is not uploaded.

Related Percentage Calculator pages

These pages use the same percentage calculator with examples tailored to different tasks.

FAQ

Frequently asked questions

Increase or decrease?

The sign indicates direction; magnitude is the percent change.

Same as percent difference?

Often used interchangeably for two-value comparisons.

Zero original value?

Percent change is undefined when the original is 0.

Related pages

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