-18.53% is the change from 993 to 809
Calculation steps:
[( 809 - 993 ) ÷ 993] x 100 = -18.53%
Formula
Percentage change = [(809 - 993) / 993] x 100
Subtract the new number by the original number
809 - 993 = -184
-184 ÷ 993 = -0.18529707955689828
-0.18529707955689828 x 100 = -18.53%