-88.15% is the change from 861 to 102
Calculation steps:
[( 102 - 861 ) ÷ 861] x 100 = -88.15%
Formula
Percentage change = [(102 - 861) / 861] x 100
Subtract the new number by the original number
102 - 861 = -759
-759 ÷ 861 = -0.8815331010452961
-0.8815331010452961 x 100 = -88.15%