-97.54% is the change from 366 to 9
Calculation steps:
[( 9 - 366 ) ÷ 366] x 100 = -97.54%
Formula
Percentage change = [(9 - 366) / 366] x 100
Subtract the new number by the original number
9 - 366 = -357
-357 ÷ 366 = -0.9754098360655737
-0.9754098360655737 x 100 = -97.54%