1.83% is the change from 821 to 836
Calculation steps:
[( 836 - 821 ) ÷ 821] x 100 = 1.83%
Formula
Percentage change = [(836 - 821) / 821] x 100
Subtract the new number by the original number
836 - 821 = 15
15 ÷ 821 = 0.018270401948842874
0.018270401948842874 x 100 = 1.83%