-43.11% is the change from 450 to 256
Calculation steps:
[( 256 - 450 ) ÷ 450] x 100 = -43.11%
Formula
Percentage change = [(256 - 450) / 450] x 100
Subtract the new number by the original number
256 - 450 = -194
-194 ÷ 450 = -0.4311111111111111
-0.4311111111111111 x 100 = -43.11%