How do I reflect selling/losing part of an asset that is depreciating over time?

I had had a dress rental business that we are closing.  We put the dresses in as depreciating assets (as a lump asset).  We sold a few of the dresses, donated some, and half of them were stolen (embezzled).  How do I reflect that in the system?  How do I remove just part of an asset that has been depreciating (we were using a 5 year depreciation and this is year 3).  We anticipate selling or donating the rest this year.