一题英文应用题5.As director of a miseum ,you noted that on an avera

一题英文应用题
5.As director of a miseum ,you noted that on an average Saturday one year ago in October you had 1052 visitors . This October on an average
Saturday the museum had only 893 visitors . What was the approximate percentage of decrease in visitors ?

A.13%
B.15%
C.18%
D.72%
E.85%
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忘了这种应用题怎么做……
把做题过程也写出来吧 谢谢