55.41% is the change from 388 to 603
Calculation steps:
[( 603 - 388 ) ÷ 388] x 100 = 55.41%
Formula
Percentage change = [(603 - 388) / 388] x 100
Subtract the new number by the original number
603 - 388 = 215
215 ÷ 388 = 0.5541237113402062
0.5541237113402062 x 100 = 55.41%