-91.46% is the change from 328 to 28
Calculation steps:
[( 28 - 328 ) ÷ 328] x 100 = -91.46%
Formula
Percentage change = [(28 - 328) / 328] x 100
Subtract the new number by the original number
28 - 328 = -300
-300 ÷ 328 = -0.9146341463414634
-0.9146341463414634 x 100 = -91.46%