# -*- coding: utf-8 -*-
s1 = 72 s2 = 85
r = (s2 - s1) / s1 * 100 print('%.1f' % r, '%')
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十三
# -*- coding: utf-8 -*-
s1 = 72
s2 = 85
r = (s2 - s1) / s1 * 100
print('%.1f' % r, '%')