-40.44% is the change from 873 to 520
Calculation steps:
[( 520 - 873 ) ÷ 873] x 100 = -40.44%
Formula
Percentage change = [(520 - 873) / 873] x 100
Subtract the new number by the original number
520 - 873 = -353
-353 ÷ 873 = -0.4043528064146621
-0.4043528064146621 x 100 = -40.44%