Selling price - money owed on mortgage - realtor fees = what you walk away with.
By your estimates the numbers would be:
335k - 254k - (.05 X 335k) = $64.25k
*And in this case, since you haven't lived there for at least 2 years, you'll pay long term capital gains tax on the selling price - purchase price ($335k-323k = $12k), which will probably be 15-20%. LTCG @ 20% would be $2.4k.
If you have receipts for the $16k spent on the house, you might be able to reduce the taxable gain by that amount, which could eliminate LTCG, but I'm not a tax pro so take it with a grain of salt.
So probably in the $60k neighborhood depending on some details and fees. That's not great when you put $73k down originally, and another $16k into improvements but real estate transactions are expensive, and sinking money into upgrades isn't always a great investment. If you're really unhappy in the current place, then I'd consider it an expensive lesson and move on to the place that you think will be a better fit for you.
*Living there at least 2 years will eliminate the capital gains tax, but if the market cools during that time, the selling price could drop as well so it becomes a guessing game based on how confident you are in your price estimates and what your local housing market might do in the next year or so.