-92.39% is the change from 867 to 66
Calculation steps:
[( 66 - 867 ) ÷ 867] x 100 = -92.39%
Formula
Percentage change = [(66 - 867) / 867] x 100
Subtract the new number by the original number
66 - 867 = -801
-801 ÷ 867 = -0.9238754325259516
-0.9238754325259516 x 100 = -92.39%