-31.58% is the change from 665 to 455
Calculation steps:
[( 455 - 665 ) ÷ 665] x 100 = -31.58%
Formula
Percentage change = [(455 - 665) / 665] x 100
Subtract the new number by the original number
455 - 665 = -210
-210 ÷ 665 = -0.3157894736842105
-0.3157894736842105 x 100 = -31.58%