-17.52% is the change from 993 to 819
Calculation steps:
[( 819 - 993 ) ÷ 993] x 100 = -17.52%
Formula
Percentage change = [(819 - 993) / 993] x 100
Subtract the new number by the original number
819 - 993 = -174
-174 ÷ 993 = -0.17522658610271905
-0.17522658610271905 x 100 = -17.52%