2.83% is the change from 813 to 836
Calculation steps:
[( 836 - 813 ) ÷ 813] x 100 = 2.83%
Formula
Percentage change = [(836 - 813) / 813] x 100
Subtract the new number by the original number
836 - 813 = 23
23 ÷ 813 = 0.028290282902829027
0.028290282902829027 x 100 = 2.83%