Percentage Increase Calculator

Calculate the percentage increase between two values instantly. Enter your original and new values to get the exact percentage increase, with the formula and step-by-step explanation.

Percentage Increase

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A positive number is an increase; a negative number is a decrease.

What is a percentage increase calculator?

A percentage increase calculator measures how much a value has grown, expressed as a percentage of the original value. It answers the common question: by what percentage did this number go up? Whether you are tracking a salary raise, a price change, or sales growth, the percentage increase gives you a clear, comparable figure.

The formula is simple: ((new value − original value) / original value) × 100. The result tells you the size of the increase relative to where you started. A larger percentage means a bigger jump. This tool runs that calculation for you instantly and removes the chance of arithmetic mistakes.

Unlike a percentage difference, which treats both numbers equally, a percentage increase always uses the original value as the baseline. That makes it the right choice whenever one value clearly comes before the other — last month's sales, your old salary, a product's previous price.

How to calculate percentage increase

  1. 1

    Enter the original value

    Type the starting number — the earlier or lower figure you are measuring growth from, such as an old price or previous month's sales.

  2. 2

    Enter the new value

    Type the current or higher number you want to compare against, such as the new price or this month's sales.

  3. 3

    Read the percentage increase

    The calculator instantly applies ((new − original) / original) × 100 and shows the percentage increase, plus the absolute change.

Why use this percentage increase calculator?

Instant and accurate

No manual arithmetic or spreadsheet formulas. Get the exact percentage increase the moment you type both values.

Works for any numbers

Prices, salaries, sales, traffic, weights — any pair of values where one comes after the other. Decimals and negatives are supported.

Transparent formula

Every result shows the underlying calculation, so you can verify the math and learn the method for next time.

FAQ

Frequently Asked Questions

Quick answers to common questions about percentage calculations.

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