Rock music accounted for 34.5% of the total sales of recorded music in 1999, and 22.8% of the total sales of recorded music in 2009. Find the average rate of change of the percentage of sales of rock music

Rock music accounted for 34.5% of the total sales of recorded music in 1999, and 22.8% of the total sales of recorded music in 2009. Find the average rate of change of the percentage of sales of rock music from 1999 to 2009.

Round to the nearest hundredth of a percent.

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Rock music accounted for 34.5% of the total sales of recorded music in 1999, and 22.8% of the total sales of recorded music in 2009. Find the average rate of change of the perce…

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