8.58% is the change from 839 to 911
Calculation steps:
[( 911 - 839 ) ÷ 839] x 100 = 8.58%
Formula
Percentage change = [(911 - 839) / 839] x 100
Subtract the new number by the original number
911 - 839 = 72
72 ÷ 839 = 0.08581644815256258
0.08581644815256258 x 100 = 8.58%