-97.72% is the change from 394 to 9
Calculation steps:
[( 9 - 394 ) ÷ 394] x 100 = -97.72%
Formula
Percentage change = [(9 - 394) / 394] x 100
Subtract the new number by the original number
9 - 394 = -385
-385 ÷ 394 = -0.9771573604060914
-0.9771573604060914 x 100 = -97.72%