165.5% is the change from 313 to 831
Calculation steps:
[( 831 - 313 ) ÷ 313] x 100 = 165.5%
Formula
Percentage change = [(831 - 313) / 313] x 100
Subtract the new number by the original number
831 - 313 = 518
518 ÷ 313 = 1.6549520766773163
1.6549520766773163 x 100 = 165.5%