Nah, that's not 20%. 17-18% IMO. You'd barely see any abs at all at 20%, and in the first pic the top 4 are visible.
10% in 12 weeks is doable but it'll be tough. How dedicated are you? How badly do you want it?
More then ever buddy... im 22 year old man and im stil natural i have a great frame people tell me soi want to get shredded now, so im pushing diet and working out