-81.07% is the change from 993 to 188
Calculation steps:
[( 188 - 993 ) ÷ 993] x 100 = -81.07%
Formula
Percentage change = [(188 - 993) / 993] x 100
Subtract the new number by the original number
188 - 993 = -805
-805 ÷ 993 = -0.81067472306143
-0.81067472306143 x 100 = -81.07%