There's probably some way to write out a formula for this, but as the number of people I'm around increases, my social skills equally decrease, until I feel massively trapped in a bubble of silence. XD
One on one or small groups are not so bad, but after a few years of doing weekly group and individual therapy sessions, my social skills haven't really improved much, so I kind of think I'm stuck this way. During that time, my therapists all pointed out that I have horrible eye contact during a conversation, and I rarely show any sign of really listening. That's what they see, but on my end I just really don't feel comfortable looking people in the eyes, and I prefer to silently listen to what someone is saying for a good while before I ever respond with my thoughts on it. Just like when I was in school, I preferred to be drawing a lot while really listening to what everyone is saying, and then drop in my 2 cents when it felt right. After a while of doing this in the group therapy, my therapists learned to not tell me to not be drawing, since it was clear that I was really paying attention.
Oh and lastly, I tend to mumble a lot. In my ears, my speech sounds totally normal and coherent, but other people have a hard time understanding me, which I often forget about and then I get ticked off. It's bad, but it's not as bad as Kenny in South Park, lol. XD
Edit: Oh, if TL;DR: Poor.