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27-11-2017
Mathematics

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12.6 percent of high-school students this year said they’d had a cigarette in the last month, down from 13.6 percent last year. Quantify the change in Relative terms

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altavistard altavistard

28-11-2017

The change was 12.6 - 13.6, or -1.0, where the negative sign denotes a decrease.

Comparing this change to the original figure (13.6%), we get

-1.0
------ = -0.074, or -0.07. This is the relative change.
13.6

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