-97.68% is the change from 861 to 20
Calculation steps:
[( 20 - 861 ) ÷ 861] x 100 = -97.68%
Formula
Percentage change = [(20 - 861) / 861] x 100
Subtract the new number by the original number
20 - 861 = -841
-841 ÷ 861 = -0.9767711962833914
-0.9767711962833914 x 100 = -97.68%