s1=72
s2=85
r=(85-72)/72*100
print('小明成绩提高了:%.1f%%'%(r))
print('小明成绩提高了:{0:.1f}%'.format(r))
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汐汐异星
s1=72
s2=85
r=(85-72)/72*100
print('小明成绩提高了:%.1f%%'%(r))
print('小明成绩提高了:{0:.1f}%'.format(r))