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how do you calculate percentage change over multiple years. If you had simply divided 80 percent by 10 years you would have calculated a return of 8 percent per year significantly higher than the actual 61 percent return. First calculate the new base from the first percent change then using the new base calculate the percent change from the second.
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This is correct method. First calculate the new base from the first percent change then using the new base calculate the percent change from the second. If you want just one number you can calculate 1349-900 1349 100 3328 and say Over the period from 2002 to 2006 the value decreased by 3328 of the 2002 value.
An individual calculates year-over-year percentage change or YOY change by evaluating two or more measurements and comparing them to the same period of time in a previous year.
The overall percent change can then be calculated from the new value and the original base value. Subtract 2008 sales from current 2010 sales. How to calculate the annual percentage growth rate with this tool. Year-over-year change is calculated on performance over a 12-month period or more.
