-97.31% is the change from 335 to 9
Calculation steps:
[( 9 - 335 ) ÷ 335] x 100 = -97.31%
Formula
Percentage change = [(9 - 335) / 335] x 100
Subtract the new number by the original number
9 - 335 = -326
-326 ÷ 335 = -0.9731343283582089
-0.9731343283582089 x 100 = -97.31%