r = (s2-s1)/s1*100
print('P1','\n小明的成绩比去年提升了:%.1f%%'%(r),'\nP2','\n小明的成绩比去年提升了:{0:.1f}%'.format(r))
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木水Joe
r = (s2-s1)/s1*100
print('P1','\n小明的成绩比去年提升了:%.1f%%'%(r),'\nP2','\n小明的成绩比去年提升了:{0:.1f}%'.format(r))