-97.56% is the change from 860 to 21
Calculation steps:
[( 21 - 860 ) ÷ 860] x 100 = -97.56%
Formula
Percentage change = [(21 - 860) / 860] x 100
Subtract the new number by the original number
21 - 860 = -839
-839 ÷ 860 = -0.9755813953488373
-0.9755813953488373 x 100 = -97.56%