-97.58% is the change from 868 to 21
Calculation steps:
[( 21 - 868 ) ÷ 868] x 100 = -97.58%
Formula
Percentage change = [(21 - 868) / 868] x 100
Subtract the new number by the original number
21 - 868 = -847
-847 ÷ 868 = -0.9758064516129032
-0.9758064516129032 x 100 = -97.58%