9% is the change from 389 to 424
Calculation steps:
[( 424 - 389 ) ÷ 389] x 100 = 9%
Formula
Percentage change = [(424 - 389) / 389] x 100
Subtract the new number by the original number
424 - 389 = 35
35 ÷ 389 = 0.08997429305912596
0.08997429305912596 x 100 = 9%