s1=72.0 s2=85.0
r=(s2-s1)/s1
print ('小明的成绩从去年的72分提升到了今年的85分,小明成绩提升的百分点:%.1f%%' %(r*100))
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--coding:utf-8--
s1=72.0 s2=85.0
r=(s2-s1)/s1
print ('小明的成绩从去年的72分提升到了今年的85分,小明成绩提升的百分点:%.1f%%' %(r*100))