Subject: percentage of improvement

In a 1998 survey, 21% polled responded favorably to a question. In 1999, 31% responded favorably.

What is the percent of improvement?

Thanks for your help,
Steve Quigg

Hi Steve,

A percent is a ratio or fraction of one quantity relative to another quantity, written per CENT, that is per 100. Here you want the improvement, 31% - 21% =10%, relative to where you started in 1998, that is 21%.

10/21 = 0.476 so the percentage improvement is 47.6%.

I hope this helps,

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