-25.26% is the change from 665 to 497
Calculation steps:
[( 497 - 665 ) ÷ 665] x 100 = -25.26%
Formula
Percentage change = [(497 - 665) / 665] x 100
Subtract the new number by the original number
497 - 665 = -168
-168 ÷ 665 = -0.25263157894736843
-0.25263157894736843 x 100 = -25.26%