4.77% is the change from 839 to 879
Calculation steps:
[( 879 - 839 ) ÷ 839] x 100 = 4.77%
Formula
Percentage change = [(879 - 839) / 839] x 100
Subtract the new number by the original number
879 - 839 = 40
40 ÷ 839 = 0.04767580452920143
0.04767580452920143 x 100 = 4.77%