-1.46% is the change from 823 to 811
Calculation steps:
[( 811 - 823 ) ÷ 823] x 100 = -1.46%
Formula
Percentage change = [(811 - 823) / 823] x 100
Subtract the new number by the original number
811 - 823 = -12
-12 ÷ 823 = -0.014580801944106925
-0.014580801944106925 x 100 = -1.46%