-33.98% is the change from 665 to 439
Calculation steps:
[( 439 - 665 ) ÷ 665] x 100 = -33.98%
Formula
Percentage change = [(439 - 665) / 665] x 100
Subtract the new number by the original number
439 - 665 = -226
-226 ÷ 665 = -0.3398496240601504
-0.3398496240601504 x 100 = -33.98%