-78.42% is the change from 329 to 71
Calculation steps:
[( 71 - 329 ) ÷ 329] x 100 = -78.42%
Formula
Percentage change = [(71 - 329) / 329] x 100
Subtract the new number by the original number
71 - 329 = -258
-258 ÷ 329 = -0.78419452887538
-0.78419452887538 x 100 = -78.42%