-13.64% is the change from 330 to 285
Calculation steps:
[( 285 - 330 ) ÷ 330] x 100 = -13.64%
Formula
Percentage change = [(285 - 330) / 330] x 100
Subtract the new number by the original number
285 - 330 = -45
-45 ÷ 330 = -0.13636363636363635
-0.13636363636363635 x 100 = -13.64%