Atleast 18%.... I would say by that first picture. The second one looks like you are sucking it in.
IMO - I think you need to do a TON of cardio, if you want to lose that gut. I am not busting, just giving you my opinion.
I am not arguing with what everyone else says, because I know everyones body reacts differently do different stimulus. But I don't think conecentrating on lifting is going to get you there that fast, because it doesn't look like you have much muscle right now to work with. If you eat to build muscle you will gain fat, if you eat to lose fat you will lose muscle....JMO
If you want to have a washboard in four weeks like these guys up top say, you better have a very strict diet and be doing long vigorous cardio sessions everyday. Still after that, I dont think you will have 12% BF in four weeks.
Keep us posted on your results