8.31% is the change from 830 to 899
Calculation steps:
[( 899 - 830 ) ÷ 830] x 100 = 8.31%
Formula
Percentage change = [(899 - 830) / 830] x 100
Subtract the new number by the original number
899 - 830 = 69
69 ÷ 830 = 0.08313253012048193
0.08313253012048193 x 100 = 8.31%