41.69% is the change from 451 to 639
Calculation steps:
[( 639 - 451 ) ÷ 451] x 100 = 41.69%
Formula
Percentage change = [(639 - 451) / 451] x 100
Subtract the new number by the original number
639 - 451 = 188
188 ÷ 451 = 0.41685144124168516
0.41685144124168516 x 100 = 41.69%