# -*- coding: utf-8 -*-
s1 = 72
s2 = 85
r = (s2-s1)/s1*100
print('小明的成绩提高了 %.1f%%' % r)
print('小明的成绩提高了{0:.1f}%'.format(r))
print(f'小明的成绩提高了{r:.1f}%')
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零度_Jack
# -*- coding: utf-8 -*-
s1 = 72
s2 = 85
r = (s2-s1)/s1*100
print('小明的成绩提高了 %.1f%%' % r)
print('小明的成绩提高了{0:.1f}%'.format(r))
print(f'小明的成绩提高了{r:.1f}%')