Easy, this is Markup. :D
Use these two formulas:
Markup= New-Original
and
Markup%=[tex] \frac{Markup}{Original} *100[/tex]
Now, find the Markup,
Markup=$2075-$1589=
M=$486
Now, find the Markup%,
Markup%= [tex] \frac{486}{1589}* 100[/tex]
M%=0.305852738*100
M%=30.6 (rounded)
Thus, your answer is 30.6% increase.