I know this question is very basic, but it would clear up a bunch of smaller misconceptions for me.
Let's say Company A wanted to buy an 80% stake in Company B. Would the price of this 80% stake be derived from the Company B's Market Cap or Company B's Enterprise Value. Furthermore, would the price of this stake be as simple as .8(Company B market cap) or .8(Company B Enterprise Value). Thanks for the help!