-92.33% is the change from 861 to 66
Calculation steps:
[( 66 - 861 ) ÷ 861] x 100 = -92.33%
Formula
Percentage change = [(66 - 861) / 861] x 100
Subtract the new number by the original number
66 - 861 = -795
-795 ÷ 861 = -0.9233449477351916
-0.9233449477351916 x 100 = -92.33%