$11 NLTRN - Simple Medium Pair

[zacd]

Poker Stars
No Limit Holdem Tournament
Blinds: t15/t30
2 players
Converter

Stack sizes:
SB: t1575
Hero: t1425

Pre-flop: (2 players) Hero is BB with 9[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/spade.gif[/img]
<font color="#cc0000">SB raises to t90</font>, <font color="#cc0000">Hero raises to t270</font>, <font color="#cc0000">SB raises all-in t1575</font>, <font color="#cc0000">Hero calls all-in t1155</font>.
Uncalled bets: t150 returned to SB.

I get into this situation all the time and I never know what the correct action is. Half the time I fold, half the time I call. Is the right way to figure this out to analyze their hand range and see what pokerstove says?

So for example I would expect this villain to be on 77+, AJs+, AQo+ (although I doubt he would shove so quickly w/ AA/KK so maybe more like 77-QQ).

According to PokerStove I'm a 45/55 dog to his range, so I should fold right?