34.54% is the change from 388 to 522
Calculation steps:
[( 522 - 388 ) ÷ 388] x 100 = 34.54%
Formula
Percentage change = [(522 - 388) / 388] x 100
Subtract the new number by the original number
522 - 388 = 134
134 ÷ 388 = 0.34536082474226804
0.34536082474226804 x 100 = 34.54%