If its shared on fb you wont be able to track the conversion rates of the page at all unless you put a script on that post being shared. What you can do is track how many shares it will get and how many clicked on it.
Regarding how many views did the page made "VIA" sharing i think is impossible. Views can only be gathered via post on fanpages like see the "5001 people reached" but tracking how many viewed the shared post via different accounts I think is impossible atm