-19.74% is the change from 993 to 797
Calculation steps:
[( 797 - 993 ) ÷ 993] x 100 = -19.74%
Formula
Percentage change = [(797 - 993) / 993] x 100
Subtract the new number by the original number
797 - 993 = -196
-196 ÷ 993 = -0.1973816717019134
-0.1973816717019134 x 100 = -19.74%