-78.48% is the change from 330 to 71
Calculation steps:
[( 71 - 330 ) ÷ 330] x 100 = -78.48%
Formula
Percentage change = [(71 - 330) / 330] x 100
Subtract the new number by the original number
71 - 330 = -259
-259 ÷ 330 = -0.7848484848484848
-0.7848484848484848 x 100 = -78.48%