Calculate percent increase and decrease and explain what the percent measures.
Use percent change to describe a situation
Problem
A team's average rises from \(72~\text{to}~81.25~\text{points}~\text{per}~\text{game}\). Find the percent change and classify this month's average as above or below last month's.
Big Picture
What this problem is really about
The direction and above-or-below judgment come from comparing this month’s average with last month’s original seventy-two. We’ll subtract to find the point change, divide by the original average, convert to a percent, and round only at the requested precision. Multiplying the original by the rounded growth factor gives a reasonableness check.
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