-10.48% is the change from 439 to 393
Calculation steps:
[( 393 - 439 ) ÷ 439] x 100 = -10.48%
Formula
Percentage change = [(393 - 439) / 439] x 100
Subtract the new number by the original number
393 - 439 = -46
-46 ÷ 439 = -0.10478359908883828
-0.10478359908883828 x 100 = -10.48%