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Sales Change Percentage Calculator

This calculator requires the use of Javascript enabled and capable browsers. This script calculates the sales percent change from one business period to another. This is normally by month but it could be by quarters or years. This is an important trend reading calculator that is a must for businesses that survive. This is CRITICAL data! While it would be nice to have constant positive changes in sales, the generally accepted figure is 3 negatives in a row should be a wake-up call. There are exceptions to that rule such as in a tourist area that is generally six months on and six months off. The formula is ((latest sales period - previous sales period) / (previous sales period x 100)).

Enter the first period and the second period sales figures. Do NOT enter the values as lowest first and higest second (unless that is the way they yield). Enter them in time specific order, oldest first. Click the Calculate button; read the percentage of change. You may click on Clear Values and do another. You MAY enter a decimal for figures. Do not enter commas or a dollar sign (, or $).

NOTE: The same values in opposite directions do NOT yield the same change percentage. In our example, the default values yield a change percent of 12.50%. Change the order using the same values and the change percent is -11.11%, signifying a reduction in sales.

Retail Sales Change Percentage Calculator
Required Data Entry
Sales Period #1
Sales Period #2

Calculated Results
Sales Change Percentage
Updated: 7/26/11

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