-37.59% is the change from 665 to 415
Calculation steps:
[( 415 - 665 ) ÷ 665] x 100 = -37.59%
Formula
Percentage change = [(415 - 665) / 665] x 100
Subtract the new number by the original number
415 - 665 = -250
-250 ÷ 665 = -0.37593984962406013
-0.37593984962406013 x 100 = -37.59%