8.76% is the change from 388 to 422
Calculation steps:
[( 422 - 388 ) ÷ 388] x 100 = 8.76%
Formula
Percentage change = [(422 - 388) / 388] x 100
Subtract the new number by the original number
422 - 388 = 34
34 ÷ 388 = 0.08762886597938144
0.08762886597938144 x 100 = 8.76%