169.81% is the change from 308 to 831
Calculation steps:
[( 831 - 308 ) ÷ 308] x 100 = 169.81%
Formula
Percentage change = [(831 - 308) / 308] x 100
Subtract the new number by the original number
831 - 308 = 523
523 ÷ 308 = 1.698051948051948
1.698051948051948 x 100 = 169.81%