-8.96% is the change from 335 to 305
Calculation steps:
[( 305 - 335 ) ÷ 335] x 100 = -8.96%
Formula
Percentage change = [(305 - 335) / 335] x 100
Subtract the new number by the original number
305 - 335 = -30
-30 ÷ 335 = -0.08955223880597014
-0.08955223880597014 x 100 = -8.96%