Monthly Percentage Increase Calculator

Calculate the monthly percentage increase between two monthly values instantly. Enter last month's and this month's figures to get the growth rate and the dollar amount, with the formula and a step-by-step explanation.

Monthly Percentage Increase

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A positive number is monthly growth; a negative number means this month's value is lower than last month's.

What is a monthly percentage increase calculator?

A monthly percentage increase calculator measures how much a value has grown over one month, expressed as a percentage of last month's value. It answers the question: by what percentage did this figure change compared to the previous month? It is commonly used for monthly sales, expenses, traffic, and other month-over-month comparisons.

The formula is ((this month − last month) / last month) × 100. The change is divided by last month's value, so the result is always relative to the previous month. The monthly percentage increase calculator applies this automatically and returns both the percentage and the absolute monthly change.

Tracking the monthly percentage increase matters because monthly figures fluctuate and a flat number hides the trend. A 1,000-dollar monthly rise means different things on a 5,000-dollar base and a 50,000-dollar base. Expressing the change as a percentage lets you spot momentum, seasonality, and slowdowns early.

How to calculate a monthly percentage increase

  1. 1

    Enter last month's value

    Type the figure from the previous month — the baseline you are measuring the monthly change from.

  2. 2

    Enter this month's value

    Type the current month's figure you want to compare against last month's.

  3. 3

    Read the monthly growth rate

    The calculator applies ((this month − last month) / last month) × 100 and shows the monthly percentage increase plus the absolute monthly change.

Why use this monthly percentage increase calculator?

Instant and accurate

No manual arithmetic or spreadsheet formulas. Get the exact monthly growth percentage the moment both values are entered.

Great for month-over-month tracking

A percentage change lets you compare monthly momentum across sales, traffic, and expenses of different sizes.

Transparent formula

Every result is built on the standard increase formula, so you can verify the math and reuse the method for each new month.

FAQ

Frequently Asked Questions

Quick answers to common questions about percentage calculations.

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