-89.63% is the change from 328 to 34
Calculation steps:
[( 34 - 328 ) ÷ 328] x 100 = -89.63%
Formula
Percentage change = [(34 - 328) / 328] x 100
Subtract the new number by the original number
34 - 328 = -294
-294 ÷ 328 = -0.8963414634146342
-0.8963414634146342 x 100 = -89.63%