I read all of the answers and I think that there are sadly many misconceptions here. Only one (!) of the answers mentions the position and this is huge problem here.
Firstly, the question is wrongly asked I think. There is no table to show % of
equity based on the number of players only. But the good news is that unlike postflop play, there are charts that can be starting point (as somebody here mentioned already).
There are few important things to consider though. Those charts need to be linked to position. If someone gives you "starting hands chart" without information if this is early, middle or late position (or even better what is the exact position), then it is garbage most of the time.
Second thing is that you cannot think about poker in terms of "good" or "bad" hands. While of course, everybody loves to get pocket aces or kings, you have to think about starting hands in terms of ranges. There are many great materials about ranges. My last finding, which seems as a good starting point is
free ebook about preflop game. It contains information about 3bets and 4bets ranges on different positions. You can also get preflop charts for the "raise first in" situation on
https://www.upswingpoker.com/ (raise first in, means that everybody folds to you and you are first to open).
Now, I want to come back to your question and why I think it is wrongly asked. While nobody will say that for instance 78s is the "best" hand, you should still tend to open with this hand on early positions (assuming that this is cash game, on tournament there are many other factors). This is because you want to balance your good hands on early positions (AK, AQ, maybe AJ, AA, KK, QQ, JJ, TT) with worse hands / bluffs (suited connectors like, 78, 89, 9T, JT), suited aces (like A5-A2, AT). So 78s in EP will be about bottom of your range (depending on the table dynamics), but it is still good to open with this hand to balance premium hands. The later the position (or maybe rather the less people behind to decide), the more hands you should play, because of less chance of getting 3bet and higher chance of stealing the pot right away.
Please remember that I am writing about "raise first in" in this example. On later positions, most often you will face open (or in passive games limp). While for instance on the button you should open wide range (because only 2 players are left to act behind and even if called you have position advantage), when facing early position open, your calling / raising range should be tight.
There is good video from Doug Polk, where he explains, why it is more profitable to balance your range instead of going only with "best hands":