37.69% is the change from 451 to 621
Calculation steps:
[( 621 - 451 ) ÷ 451] x 100 = 37.69%
Formula
Percentage change = [(621 - 451) / 451] x 100
Subtract the new number by the original number
621 - 451 = 170
170 ÷ 451 = 0.376940133037694
0.376940133037694 x 100 = 37.69%