-99.3% is the change from 993 to 7
Calculation steps:
[( 7 - 993 ) ÷ 993] x 100 = -99.3%
Formula
Percentage change = [(7 - 993) / 993] x 100
Subtract the new number by the original number
7 - 993 = -986
-986 ÷ 993 = -0.9929506545820745
-0.9929506545820745 x 100 = -99.3%