12.85% is the change from 389 to 439
Calculation steps:
[( 439 - 389 ) ÷ 389] x 100 = 12.85%
Formula
Percentage change = [(439 - 389) / 389] x 100
Subtract the new number by the original number
439 - 389 = 50
50 ÷ 389 = 0.12853470437017994
0.12853470437017994 x 100 = 12.85%