-2.29% is the change from 873 to 853
Calculation steps:
[( 853 - 873 ) ÷ 873] x 100 = -2.29%
Formula
Percentage change = [(853 - 873) / 873] x 100
Subtract the new number by the original number
853 - 873 = -20
-20 ÷ 873 = -0.022909507445589918
-0.022909507445589918 x 100 = -2.29%