31.45% is the change from 550 to 723
Calculation steps:
[( 723 - 550 ) ÷ 550] x 100 = 31.45%
Formula
Percentage change = [(723 - 550) / 550] x 100
Subtract the new number by the original number
723 - 550 = 173
173 ÷ 550 = 0.3145454545454546
0.3145454545454546 x 100 = 31.45%