-81.77% is the change from 993 to 181
Calculation steps:
[( 181 - 993 ) ÷ 993] x 100 = -81.77%
Formula
Percentage change = [(181 - 993) / 993] x 100
Subtract the new number by the original number
181 - 993 = -812
-812 ÷ 993 = -0.8177240684793555
-0.8177240684793555 x 100 = -81.77%