Driving through Port-au-Prince and Carrefour:

PaP is almost entirely destroyed.  

Football field-sized areas of burning garbage are next to football field-sized piles of rubble.  

Based on my driving tour 80% of buildings in Port-au-Prince have been completely destroyed.

Another 12-15% stand but are too structurally damaged to go back into.  

The remaining 5-8% still stand and look just fine, obviously made with higher quality construction materials and methods.  Most of the residences on the hills look fine from a distance.