4.79% is the change from 815 to 854
Calculation steps:
[( 854 - 815 ) ÷ 815] x 100 = 4.79%
Formula
Percentage change = [(854 - 815) / 815] x 100
Subtract the new number by the original number
854 - 815 = 39
39 ÷ 815 = 0.04785276073619632
0.04785276073619632 x 100 = 4.79%