-81.27% is the change from 993 to 186
Calculation steps:
[( 186 - 993 ) ÷ 993] x 100 = -81.27%
Formula
Percentage change = [(186 - 993) / 993] x 100
Subtract the new number by the original number
186 - 993 = -807
-807 ÷ 993 = -0.8126888217522659
-0.8126888217522659 x 100 = -81.27%