-68.72% is the change from 665 to 208
Calculation steps:
[( 208 - 665 ) ÷ 665] x 100 = -68.72%
Formula
Percentage change = [(208 - 665) / 665] x 100
Subtract the new number by the original number
208 - 665 = -457
-457 ÷ 665 = -0.687218045112782
-0.687218045112782 x 100 = -68.72%