-97.63% is the change from 887 to 21
Calculation steps:
[( 21 - 887 ) ÷ 887] x 100 = -97.63%
Formula
Percentage change = [(21 - 887) / 887] x 100
Subtract the new number by the original number
21 - 887 = -866
-866 ÷ 887 = -0.9763246899661782
-0.9763246899661782 x 100 = -97.63%