-3.22% is the change from 838 to 811
Calculation steps:
[( 811 - 838 ) ÷ 838] x 100 = -3.22%
Formula
Percentage change = [(811 - 838) / 838] x 100
Subtract the new number by the original number
811 - 838 = -27
-27 ÷ 838 = -0.032219570405727926
-0.032219570405727926 x 100 = -3.22%