r = (85-72)/72*100
print('Hello,小明,成绩提升了%.1f%%' % r)
print('Hello,{0},成绩提升了{1:.1f}%'.format('小明',r))
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琪琪妈妈0512
r = (85-72)/72*100
print('Hello,小明,成绩提升了%.1f%%' % r)
print('Hello,{0},成绩提升了{1:.1f}%'.format('小明',r))