2.45% is the change from 816 to 836
Calculation steps:
[( 836 - 816 ) ÷ 816] x 100 = 2.45%
Formula
Percentage change = [(836 - 816) / 816] x 100
Subtract the new number by the original number
836 - 816 = 20
20 ÷ 816 = 0.024509803921568627
0.024509803921568627 x 100 = 2.45%