83.81% is the change from 451 to 829
Calculation steps:
[( 829 - 451 ) ÷ 451] x 100 = 83.81%
Formula
Percentage change = [(829 - 451) / 451] x 100
Subtract the new number by the original number
829 - 451 = 378
378 ÷ 451 = 0.8381374722838137
0.8381374722838137 x 100 = 83.81%