Refer to the following graph and answer the given questions.
Number of scarves sold by store M in 2004 = 320
Number of scarves sold by store M in 2005 = 190
=> Required % decrease = $$\frac{320 - 190}{320} \times 100$$
= $$\frac{325}{8} = 40 \frac{5}{8} \%$$
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