The website link above calculates odds for winning with a certain hand and the percentages are adjusted based on how many players haven't folded and of course, the cards shown on the flop/turn/river.
I'd really appreciate it if someone could enlighten me as to how these percentages are worked out. e.g. if you have AA, why is it an 85% chance of winning against one opponent (without knowing their hand)? How do they adjust the percentage for 2,3,4 players etc? Also, how does it change when you enter in the villains hand e.g. your AA vs their KK?
Thanks in advance