-94.89% is the change from 450 to 23
Calculation steps:
[( 23 - 450 ) ÷ 450] x 100 = -94.89%
Formula
Percentage change = [(23 - 450) / 450] x 100
Subtract the new number by the original number
23 - 450 = -427
-427 ÷ 450 = -0.9488888888888889
-0.9488888888888889 x 100 = -94.89%