50.52% is the change from 388 to 584
Calculation steps:
[( 584 - 388 ) ÷ 388] x 100 = 50.52%
Formula
Percentage change = [(584 - 388) / 388] x 100
Subtract the new number by the original number
584 - 388 = 196
196 ÷ 388 = 0.5051546391752577
0.5051546391752577 x 100 = 50.52%