-7.61% is the change from 355 to 328
Calculation steps:
[( 328 - 355 ) ÷ 355] x 100 = -7.61%
Formula
Percentage change = [(328 - 355) / 355] x 100
Subtract the new number by the original number
328 - 355 = -27
-27 ÷ 355 = -0.07605633802816901
-0.07605633802816901 x 100 = -7.61%