-7.1% is the change from 873 to 811
Calculation steps:
[( 811 - 873 ) ÷ 873] x 100 = -7.1%
Formula
Percentage change = [(811 - 873) / 873] x 100
Subtract the new number by the original number
811 - 873 = -62
-62 ÷ 873 = -0.07101947308132875
-0.07101947308132875 x 100 = -7.1%