8.04% is the change from 423 to 457
Calculation steps:
[( 457 - 423 ) ÷ 423] x 100 = 8.04%
Formula
Percentage change = [(457 - 423) / 423] x 100
Subtract the new number by the original number
457 - 423 = 34
34 ÷ 423 = 0.08037825059101655
0.08037825059101655 x 100 = 8.04%