-30.75% is the change from 439 to 304
Calculation steps:
[( 304 - 439 ) ÷ 439] x 100 = -30.75%
Formula
Percentage change = [(304 - 439) / 439] x 100
Subtract the new number by the original number
304 - 439 = -135
-135 ÷ 439 = -0.30751708428246016
-0.30751708428246016 x 100 = -30.75%