-97.63% is the change from 843 to 20
Calculation steps:
[( 20 - 843 ) ÷ 843] x 100 = -97.63%
Formula
Percentage change = [(20 - 843) / 843] x 100
Subtract the new number by the original number
20 - 843 = -823
-823 ÷ 843 = -0.9762752075919335
-0.9762752075919335 x 100 = -97.63%