-93.92% is the change from 329 to 20
Calculation steps:
[( 20 - 329 ) ÷ 329] x 100 = -93.92%
Formula
Percentage change = [(20 - 329) / 329] x 100
Subtract the new number by the original number
20 - 329 = -309
-309 ÷ 329 = -0.939209726443769
-0.939209726443769 x 100 = -93.92%