I dropped 4lbs in 2 days during depletion. Its typical and don't use that as a guideline
Where are you getting the BF% info from? I hope its not one of those Tanita type scales or some bioimpedence tool. Those things are crap and do not acurately measure. They are typically 5-7% off in either direction. I highly doubt you've lost 2lbs of LBM with only a 250 cal deficit.