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The population of Bumpton increased by 10% from 1980 to 1990 and decreased by 10% from 1990 to 2000 what is the net percent change in the population on Bumpton from 1980 to 2000 ?

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Lets say it started at 100. In ten years, it was 110. In another ten years, it was 121. Now deduct ten percent, or 121-12.1

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