2.82% is the change from 816 to 839
Calculation steps:
[( 839 - 816 ) ÷ 816] x 100 = 2.82%
Formula
Percentage change = [(839 - 816) / 816] x 100
Subtract the new number by the original number
839 - 816 = 23
23 ÷ 816 = 0.028186274509803922
0.028186274509803922 x 100 = 2.82%