-20.73% is the change from 328 to 260
Calculation steps:
[( 260 - 328 ) ÷ 328] x 100 = -20.73%
Formula
Percentage change = [(260 - 328) / 328] x 100
Subtract the new number by the original number
260 - 328 = -68
-68 ÷ 328 = -0.2073170731707317
-0.2073170731707317 x 100 = -20.73%