-97.7% is the change from 868 to 20
Calculation steps:
[( 20 - 868 ) ÷ 868] x 100 = -97.7%
Formula
Percentage change = [(20 - 868) / 868] x 100
Subtract the new number by the original number
20 - 868 = -848
-848 ÷ 868 = -0.9769585253456221
-0.9769585253456221 x 100 = -97.7%