The number of projects handled by company B decreased by what percent from 2004 to 2006?

The number of projects handled by company B decreased by what percent from 2004 to 2006? Correct Answer $$40\frac{5}{8}$$ %

Number of projects handled by company B in 2004 = 320
Number of projects handled by company B in 2006 = 190
Required decrease percentage
$$\eqalign{& = \frac{320-190}{320}\times100 \cr& = \frac{130}{320}\times100 \cr& = \frac{1300}{32}\% \cr& = \frac{325}{8}\% \cr& = 40\frac{5}{8}\% \cr} $$
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