48.12% is the change from 451 to 668
Calculation steps:
[( 668 - 451 ) ÷ 451] x 100 = 48.12%
Formula
Percentage change = [(668 - 451) / 451] x 100
Subtract the new number by the original number
668 - 451 = 217
217 ÷ 451 = 0.4811529933481153
0.4811529933481153 x 100 = 48.12%