-21.28% is the change from 329 to 259
Calculation steps:
[( 259 - 329 ) ÷ 329] x 100 = -21.28%
Formula
Percentage change = [(259 - 329) / 329] x 100
Subtract the new number by the original number
259 - 329 = -70
-70 ÷ 329 = -0.2127659574468085
-0.2127659574468085 x 100 = -21.28%