-81.57% is the change from 993 to 183
Calculation steps:
[( 183 - 993 ) ÷ 993] x 100 = -81.57%
Formula
Percentage change = [(183 - 993) / 993] x 100
Subtract the new number by the original number
183 - 993 = -810
-810 ÷ 993 = -0.8157099697885196
-0.8157099697885196 x 100 = -81.57%