---
title: "Percentage Change Calculator | Numequo"
description: "Measure the increase or decrease between two values. Get a clear result with the formula, examples and useful explanations."
canonical: "https://www.numequo.com/math/percentages/percentage-change-calculator/"
locale: "en"
---
[Numequo](https://www.numequo.com/) › [Math](https://www.numequo.com/math/) › [Percentages](https://www.numequo.com/math/percentages/)

# Percentage Change Calculator

Compare an initial value with a new value to see the exact relative change.

## Input data

- **Initial value** - type: number; default: 80; step: 0.01
- **New value** - type: number; default: 100; step: 0.01

## How it works

Change (%) = (new − initial) ÷ |initial| × 100.

## Quick examples

- **80 to 100** - Initial value: 80, New value: 100
- **250 to 200** - Initial value: 250, New value: 200
- **12 to 18** - Initial value: 12, New value: 18

## Understanding your result

An increase means the new value is higher; a decrease means it is lower. The percentage expresses that difference relative to the initial value, not just the raw gap between both numbers.

Last verified: 29 September 2026 (2026-09-29)

## Frequently asked questions

### What is percentage change?

It expresses a difference relative to the starting value.

### Why can’t the initial value be zero?

Percentage change divides by the initial value, so zero would make it undefined.

### What does a negative result mean?

It means the new value is lower than the initial value.

### Is percentage change the same as percentage points?

No. Percentage points compare two percentages directly; percentage change is relative.

## Related calculators

- [Percentage Calculator](https://www.numequo.com/math/percentages/percentage-calculator/) - Find any percentage of a number instantly.
- [Rule of Three Calculator](https://www.numequo.com/math/proportions-ratios/rule-of-three-calculator/) - Solve a direct proportion from three known values and see every cross-multiplication step.
- [Weighted Average Calculator](https://www.numequo.com/math/descriptive-statistics/weighted-average-calculator/) - Calculate a weighted average and understand the contribution of every value and coefficient.
- [Quartile and Interquartile Range Calculator](https://www.numequo.com/math/descriptive-statistics/quartile-interquartile-range-calculator/) - Sort a dataset, calculate its quartiles and IQR, and explore its distribution on a visual scale.
- [Rounding Calculator](https://www.numequo.com/math/numbers-notation/rounding-calculator/) - Round a number to a chosen decimal place and see which digit determines the result.
- [Significant Figures Calculator](https://www.numequo.com/math/numbers-notation/significant-figures-calculator/) - Round a value to the requested number of significant figures and identify its first significant digit.

## Structured data

```json
{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "WebPage",
      "@id": "https://www.numequo.com/math/percentages/percentage-change-calculator/#page",
      "name": "Percentage Change Calculator | Numequo",
      "description": "Measure the increase or decrease between two values. Get a clear result with the formula, examples and useful explanations.",
      "url": "https://www.numequo.com/math/percentages/percentage-change-calculator/",
      "inLanguage": "en",
      "isPartOf": {
        "@type": "WebSite",
        "name": "Numequo",
        "url": "https://www.numequo.com/"
      }
    },
    {
      "@type": "BreadcrumbList",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Numequo",
          "item": "https://www.numequo.com/"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "Math",
          "item": "https://www.numequo.com/math/"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "Percentages",
          "item": "https://www.numequo.com/math/percentages/"
        },
        {
          "@type": "ListItem",
          "position": 4,
          "name": "Percentage Change Calculator",
          "item": "https://www.numequo.com/math/percentages/percentage-change-calculator/"
        }
      ]
    },
    {
      "@type": "WebApplication",
      "name": "Percentage Change Calculator",
      "description": "Measure the increase or decrease between two values.",
      "url": "https://www.numequo.com/math/percentages/percentage-change-calculator/",
      "applicationCategory": "UtilitiesApplication",
      "operatingSystem": "Any",
      "offers": {
        "@type": "Offer",
        "price": "0",
        "priceCurrency": "EUR"
      }
    },
    {
      "@type": "FAQPage",
      "mainEntity": [
        {
          "@type": "Question",
          "name": "What is percentage change?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "It expresses a difference relative to the starting value."
          }
        },
        {
          "@type": "Question",
          "name": "Why can’t the initial value be zero?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "Percentage change divides by the initial value, so zero would make it undefined."
          }
        },
        {
          "@type": "Question",
          "name": "What does a negative result mean?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "It means the new value is lower than the initial value."
          }
        },
        {
          "@type": "Question",
          "name": "Is percentage change the same as percentage points?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "No. Percentage points compare two percentages directly; percentage change is relative."
          }
        }
      ]
    }
  ]
}
```