-8.46% is the change from 993 to 909
Calculation steps:
[( 909 - 993 ) ÷ 993] x 100 = -8.46%
Formula
Percentage change = [(909 - 993) / 993] x 100
Subtract the new number by the original number
909 - 993 = -84
-84 ÷ 993 = -0.08459214501510574
-0.08459214501510574 x 100 = -8.46%