-8.27% is the change from 665 to 610
Calculation steps:
[( 610 - 665 ) ÷ 665] x 100 = -8.27%
Formula
Percentage change = [(610 - 665) / 665] x 100
Subtract the new number by the original number
610 - 665 = -55
-55 ÷ 665 = -0.08270676691729323
-0.08270676691729323 x 100 = -8.27%