How many grams of Protein a day? Formula?

When I went for my appt with the nutritionist, I was told based on my weight, etc. I needed to take in 77 grams of protein a day while healing.
No one has told me to have less and my surgery was 8 weeks ago.

I know that SOMEWHERE I saw a formula for figuring out how much protein I should have now that I'm over 40 pounds thinner. Just can't find it of course.

Does anyone know the formula to which I'm referring? It wasn't the .4% g/lb....it was a more complicated formula.

If anyone knows it, or if anyone weighs about 270 and was given an amount, that's what I'd go by.

Thanks very much.