8.16% is the change from 392 to 424
Calculation steps:
[( 424 - 392 ) ÷ 392] x 100 = 8.16%
Formula
Percentage change = [(424 - 392) / 392] x 100
Subtract the new number by the original number
424 - 392 = 32
32 ÷ 392 = 0.08163265306122448
0.08163265306122448 x 100 = 8.16%