How Should I play this hand?

[amirsal]

pokerstars Hand #151587333176: Tournament #1526627299, $0.60+$0.06 USD Hold'em No Limit - Level III (25/50) - 2016/04/08 1:08:57 EET [2016/04/07 18:08:57 ET]
Table '1526627299 2' 9-max Seat #4 is the button
Seat 1: PastorOsny (4000 in chips)
Seat 2: billyz222 (11545 in chips)
Seat 3: ZAVODchani22 (2745 in chips)
Seat 4: RCU_Q (3400 in chips)
Seat 6: ricozo (3950 in chips)
Seat 7: amirsal1 (2520 in chips)
Seat 8: bigm818 (3215 in chips)
Seat 9: jotacepe (1955 in chips) is sitting out
ricozo: posts small blind 25
amirsal1: posts big blind 50
*** HOLE CARDS ***
Dealt to amirsal1 [8s Ks]
bigm818: folds
jotacepe: folds
PastorOsny: folds
billyz222: calls 50
ZAVODchani22: folds
RCU_Q: raises 50 to 100
ricozo: folds
amirsal1: calls 50
billyz222: calls 50
*** FLOP *** [Qs 4s 3c]
amirsal1: checks
billyz222: bets 300
RCU_Q: calls 300
amirsal1: folds

I didn't know how to put it in a simpler simulator or something, so this is what i got.
anyway i had a flush draw with the 2nd nut flush draw, I won't tell you what I did or the outcome, to I won't affect your opinion. do you think I should call or fold in this situation?
the bet is 300, the pot had 925.

Any help appriciated!