How long is a peice of string?
[less cryptic answer = no one can tell you just how much fat you can lose - it will depend on your genetics, your fat-ness now, your diet, your training and a myriad of other things....].
If you want to lose LOTS and FAST then your best bet would be to do something like Lyle McDonalds PSMF. Quick. Painful. But ever so effective.
[ps: and you may want to skip the sprinting EVERY day...]...