1.08% is the change from 830 to 839
Calculation steps:
[( 839 - 830 ) ÷ 830] x 100 = 1.08%
Formula
Percentage change = [(839 - 830) / 830] x 100
Subtract the new number by the original number
839 - 830 = 9
9 ÷ 830 = 0.010843373493975903
0.010843373493975903 x 100 = 1.08%