-53.08% is the change from 665 to 312
Calculation steps:
[( 312 - 665 ) ÷ 665] x 100 = -53.08%
Formula
Percentage change = [(312 - 665) / 665] x 100
Subtract the new number by the original number
312 - 665 = -353
-353 ÷ 665 = -0.530827067669173
-0.530827067669173 x 100 = -53.08%