1.71% is the change from 817 to 831
Calculation steps:
[( 831 - 817 ) ÷ 817] x 100 = 1.71%
Formula
Percentage change = [(831 - 817) / 817] x 100
Subtract the new number by the original number
831 - 817 = 14
14 ÷ 817 = 0.017135862913096694
0.017135862913096694 x 100 = 1.71%