Tesla Motors Club

I had my X 100D delivered end of March, it was charged to 100% at 297 Miles ( did that twice only) and about 265-267 Miles for 90%.

Once in June I used it till about 15 miles left, and after that when I charged the battery, it only gets to 292 miles to 100% and about 262 for 90%.

Is that normal? Did it happen because I drove once to very low battery? Any remedy I can do?

Thanks.