31.82% is the change from 550 to 725
Calculation steps:
[( 725 - 550 ) ÷ 550] x 100 = 31.82%
Formula
Percentage change = [(725 - 550) / 550] x 100
Subtract the new number by the original number
725 - 550 = 175
175 ÷ 550 = 0.3181818181818182
0.3181818181818182 x 100 = 31.82%