-8.06% is the change from 993 to 913
Calculation steps:
[( 913 - 993 ) ÷ 993] x 100 = -8.06%
Formula
Percentage change = [(913 - 993) / 993] x 100
Subtract the new number by the original number
913 - 993 = -80
-80 ÷ 993 = -0.08056394763343404
-0.08056394763343404 x 100 = -8.06%