-97.7% is the change from 869 to 20
Calculation steps:
[( 20 - 869 ) ÷ 869] x 100 = -97.7%
Formula
Percentage change = [(20 - 869) / 869] x 100
Subtract the new number by the original number
20 - 869 = -849
-849 ÷ 869 = -0.9769850402761795
-0.9769850402761795 x 100 = -97.7%