-98.27% is the change from 868 to 15
Calculation steps:
[( 15 - 868 ) ÷ 868] x 100 = -98.27%
Formula
Percentage change = [(15 - 868) / 868] x 100
Subtract the new number by the original number
15 - 868 = -853
-853 ÷ 868 = -0.9827188940092166
-0.9827188940092166 x 100 = -98.27%