-97.32% is the change from 336 to 9
Calculation steps:
[( 9 - 336 ) ÷ 336] x 100 = -97.32%
Formula
Percentage change = [(9 - 336) / 336] x 100
Subtract the new number by the original number
9 - 336 = -327
-327 ÷ 336 = -0.9732142857142857
-0.9732142857142857 x 100 = -97.32%