-28.85% is the change from 454 to 323
Calculation steps:
[( 323 - 454 ) ÷ 454] x 100 = -28.85%
Formula
Percentage change = [(323 - 454) / 454] x 100
Subtract the new number by the original number
323 - 454 = -131
-131 ÷ 454 = -0.28854625550660795
-0.28854625550660795 x 100 = -28.85%