-86.36% is the change from 330 to 45
Calculation steps:
[( 45 - 330 ) ÷ 330] x 100 = -86.36%
Formula
Percentage change = [(45 - 330) / 330] x 100
Subtract the new number by the original number
45 - 330 = -285
-285 ÷ 330 = -0.8636363636363636
-0.8636363636363636 x 100 = -86.36%