-80.06% is the change from 993 to 198
Calculation steps:
[( 198 - 993 ) ÷ 993] x 100 = -80.06%
Formula
Percentage change = [(198 - 993) / 993] x 100
Subtract the new number by the original number
198 - 993 = -795
-795 ÷ 993 = -0.8006042296072508
-0.8006042296072508 x 100 = -80.06%