Calculate Percentage Change and Growth Rate

Tracking business KPI progress, website traffic growth, or financial portfolio shifts requires calculating precise percentage changes over time. You can determine the exact percentage difference between baseline and final values with one click.

× % =
e.g. 15% of 250,000
is what % of
e.g. 37 out of 120
change
e.g. last month 48,000 → this month 52,800
% applied =
e.g. 20% off → −20, 5% raise → 5
is the result after %, so the original was
e.g. 71,200 after 20% off → list price

Step by step

  1. 1

    Enter Starting Value

    Input the historical baseline metric (e.g., last month's visits).

  2. 2

    Enter Final Value

    Type the current period's metric into the second field.

  3. 3

    Calculate Percent Change

    Click calculate to view the exact percentage growth or decline rate.

Analyze Growth and Reductions

Enter your starting value (A) and updated value (B) to see the net percentage change, clearly flagged as either positive growth or negative contraction.

Report-Ready Two-Decimal Precision

Results are automatically rounded to two decimal places, making them immediately ready to drop into pitch decks, analytics reports, and spreadsheets.

Guides by situation

Percentage Calculator →

Frequently asked

What if the final number is smaller than the initial number?

The calculator will display a negative percentage indicating the exact rate of decline.

How do I calculate what percentage one number is of another?

Switch to the 'A is what % of B' mode to find proportion and share percentages directly.