31.17% is the change from 555 to 728
Calculation steps:
[( 728 - 555 ) ÷ 555] x 100 = 31.17%
Formula
Percentage change = [(728 - 555) / 555] x 100
Subtract the new number by the original number
728 - 555 = 173
173 ÷ 555 = 0.3117117117117117
0.3117117117117117 x 100 = 31.17%