-44.44% is the change from 450 to 250
Calculation steps:
[( 250 - 450 ) ÷ 450] x 100 = -44.44%
Formula
Percentage change = [(250 - 450) / 450] x 100
Subtract the new number by the original number
250 - 450 = -200
-200 ÷ 450 = -0.4444444444444444
-0.4444444444444444 x 100 = -44.44%