9.15% is the change from 831 to 907
Calculation steps:
[( 907 - 831 ) ÷ 831] x 100 = 9.15%
Formula
Percentage change = [(907 - 831) / 831] x 100
Subtract the new number by the original number
907 - 831 = 76
76 ÷ 831 = 0.0914560770156438
0.0914560770156438 x 100 = 9.15%