Call your realtor and explain the situation and see what they say. At the very least you will need to reimburse the buyers for any expense they have undertaken, (inspections, costs for financing etc). Similarly if they have already made moving plans and cancelled leases and other things, then it would appear (and I am not an attorney so take this only as an uninformed opinion) that you could be responsible for costs associated with that as well. Again, check with an attorney.

Finally there are other possible legal ramifications (specific performance) comes to mind but it would be hard to say if that is applicable here.

Why are you changing your mind 2 weeks from close of escrow? I guess it doesn’t matter but it is curious. Anyways talking to people on here will not hurt but the longer you wait the worse it will get so call your realtor and ask them.