-3.56% is the change from 450 to 434
Calculation steps:
[( 434 - 450 ) ÷ 450] x 100 = -3.56%
Formula
Percentage change = [(434 - 450) / 450] x 100
Subtract the new number by the original number
434 - 450 = -16
-16 ÷ 450 = -0.035555555555555556
-0.035555555555555556 x 100 = -3.56%