-5.96% is the change from 873 to 821
Calculation steps:
[( 821 - 873 ) ÷ 873] x 100 = -5.96%
Formula
Percentage change = [(821 - 873) / 873] x 100
Subtract the new number by the original number
821 - 873 = -52
-52 ÷ 873 = -0.05956471935853379
-0.05956471935853379 x 100 = -5.96%