-0.24% is the change from 838 to 836
Calculation steps:
[( 836 - 838 ) ÷ 838] x 100 = -0.24%
Formula
Percentage change = [(836 - 838) / 838] x 100
Subtract the new number by the original number
836 - 838 = -2
-2 ÷ 838 = -0.002386634844868735
-0.002386634844868735 x 100 = -0.24%