-99.55% is the change from 665 to 3
Calculation steps:
[( 3 - 665 ) ÷ 665] x 100 = -99.55%
Formula
Percentage change = [(3 - 665) / 665] x 100
Subtract the new number by the original number
3 - 665 = -662
-662 ÷ 665 = -0.9954887218045113
-0.9954887218045113 x 100 = -99.55%