-36.39% is the change from 665 to 423
Calculation steps:
[( 423 - 665 ) ÷ 665] x 100 = -36.39%
Formula
Percentage change = [(423 - 665) / 665] x 100
Subtract the new number by the original number
423 - 665 = -242
-242 ÷ 665 = -0.36390977443609024
-0.36390977443609024 x 100 = -36.39%