-7.58% is the change from 330 to 305
Calculation steps:
[( 305 - 330 ) ÷ 330] x 100 = -7.58%
Formula
Percentage change = [(305 - 330) / 330] x 100
Subtract the new number by the original number
305 - 330 = -25
-25 ÷ 330 = -0.07575757575757576
-0.07575757575757576 x 100 = -7.58%