17.21% is the change from 709 to 831
Calculation steps:
[( 831 - 709 ) ÷ 709] x 100 = 17.21%
Formula
Percentage change = [(831 - 709) / 709] x 100
Subtract the new number by the original number
831 - 709 = 122
122 ÷ 709 = 0.17207334273624825
0.17207334273624825 x 100 = 17.21%