-30.87% is the change from 635 to 439
Calculation steps:
[( 439 - 635 ) ÷ 635] x 100 = -30.87%
Formula
Percentage change = [(439 - 635) / 635] x 100
Subtract the new number by the original number
439 - 635 = -196
-196 ÷ 635 = -0.30866141732283464
-0.30866141732283464 x 100 = -30.87%