-99.09% is the change from 994 to 9
Calculation steps:
[( 9 - 994 ) ÷ 994] x 100 = -99.09%
Formula
Percentage change = [(9 - 994) / 994] x 100
Subtract the new number by the original number
9 - 994 = -985
-985 ÷ 994 = -0.9909456740442656
-0.9909456740442656 x 100 = -99.09%