I know this years sales and the % change over Last Year ( it is down) how do I find Last Years sales?
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I know this years sales and the % change over Last Year ( it is down) how do I find Last Years sales?
Start with the formula for percentage change from one year to the next. If we letbe the initial value, and
be the value one year later, then the change in sales expressed as a percent of the initial value is then:
So if you know the percent change p and the value foryou can rearrange this to get:
For example: ifand
then
You can check this by substituting this value forback into the first equation and see if it agrees:
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