-11.16% is the change from 439 to 390
Calculation steps:
[( 390 - 439 ) ÷ 439] x 100 = -11.16%
Formula
Percentage change = [(390 - 439) / 439] x 100
Subtract the new number by the original number
390 - 439 = -49
-49 ÷ 439 = -0.11161731207289294
-0.11161731207289294 x 100 = -11.16%