40.48% is the change from 457 to 642
Calculation steps:
[( 642 - 457 ) ÷ 457] x 100 = 40.48%
Formula
Percentage change = [(642 - 457) / 457] x 100
Subtract the new number by the original number
642 - 457 = 185
185 ÷ 457 = 0.4048140043763676
0.4048140043763676 x 100 = 40.48%