-97.59% is the change from 872 to 21
Calculation steps:
[( 21 - 872 ) ÷ 872] x 100 = -97.59%
Formula
Percentage change = [(21 - 872) / 872] x 100
Subtract the new number by the original number
21 - 872 = -851
-851 ÷ 872 = -0.9759174311926605
-0.9759174311926605 x 100 = -97.59%