48.71% is the change from 388 to 577
Calculation steps:
[( 577 - 388 ) ÷ 388] x 100 = 48.71%
Formula
Percentage change = [(577 - 388) / 388] x 100
Subtract the new number by the original number
577 - 388 = 189
189 ÷ 388 = 0.48711340206185566
0.48711340206185566 x 100 = 48.71%