-2.72% is the change from 993 to 966
Calculation steps:
[( 966 - 993 ) ÷ 993] x 100 = -2.72%
Formula
Percentage change = [(966 - 993) / 993] x 100
Subtract the new number by the original number
966 - 993 = -27
-27 ÷ 993 = -0.027190332326283987
-0.027190332326283987 x 100 = -2.72%