40.7% is the change from 457 to 643
Calculation steps:
[( 643 - 457 ) ÷ 457] x 100 = 40.7%
Formula
Percentage change = [(643 - 457) / 457] x 100
Subtract the new number by the original number
643 - 457 = 186
186 ÷ 457 = 0.40700218818380746
0.40700218818380746 x 100 = 40.7%