8.3% is the change from 831 to 900
Calculation steps:
[( 900 - 831 ) ÷ 831] x 100 = 8.3%
Formula
Percentage change = [(900 - 831) / 831] x 100
Subtract the new number by the original number
900 - 831 = 69
69 ÷ 831 = 0.08303249097472924
0.08303249097472924 x 100 = 8.3%