8.9% is the change from 831 to 905
Calculation steps:
[( 905 - 831 ) ÷ 831] x 100 = 8.9%
Formula
Percentage change = [(905 - 831) / 831] x 100
Subtract the new number by the original number
905 - 831 = 74
74 ÷ 831 = 0.08904933814681107
0.08904933814681107 x 100 = 8.9%