-27.91% is the change from 455 to 328
Calculation steps:
[( 328 - 455 ) ÷ 455] x 100 = -27.91%
Formula
Percentage change = [(328 - 455) / 455] x 100
Subtract the new number by the original number
328 - 455 = -127
-127 ÷ 455 = -0.27912087912087913
-0.27912087912087913 x 100 = -27.91%