-99.33% is the change from 450 to 3
Calculation steps:
[( 3 - 450 ) ÷ 450] x 100 = -99.33%
Formula
Percentage change = [(3 - 450) / 450] x 100
Subtract the new number by the original number
3 - 450 = -447
-447 ÷ 450 = -0.9933333333333333
-0.9933333333333333 x 100 = -99.33%