Yes, if you are eligible for unemployment but yet you work part time you can still draw benefits.  Your weekly benefits will change based on the amount you earned the week you are claiming.  When a weekly claim is made it will ask if you worked and how much you made (before taxes) that week.

To figure this out you put part/whole=%/100 then cross multiply.  8/160=x/100 (put this in a square with 4 sections, like 2 fractions)...8x100=160x...800=160x... Then divide both sides by 160.  That will put your x on one side and the percent you are looking for on the other.