82.24% is the change from 456 to 831
Calculation steps:
[( 831 - 456 ) ÷ 456] x 100 = 82.24%
Formula
Percentage change = [(831 - 456) / 456] x 100
Subtract the new number by the original number
831 - 456 = 375
375 ÷ 456 = 0.8223684210526315
0.8223684210526315 x 100 = 82.24%