54.93% is the change from 355 to 550
Calculation steps:
[( 550 - 355 ) ÷ 355] x 100 = 54.93%
Formula
Percentage change = [(550 - 355) / 355] x 100
Subtract the new number by the original number
550 - 355 = 195
195 ÷ 355 = 0.5492957746478874
0.5492957746478874 x 100 = 54.93%