8.48% is the change from 389 to 422
Calculation steps:
[( 422 - 389 ) ÷ 389] x 100 = 8.48%
Formula
Percentage change = [(422 - 389) / 389] x 100
Subtract the new number by the original number
422 - 389 = 33
33 ÷ 389 = 0.08483290488431877
0.08483290488431877 x 100 = 8.48%