Originally Posted by Leatherface
How do i go about finding the percentage of the pot? etc
(Call amount / Pot amount after your call) X 100
On the flop your opponent bets $2 into a $4 pot, you need to call $2 after which the pot will be £8.
(2 / 8) X 100 = 25%
If you are drawing you need greater than 25% chance of the turn card making your hand to correctly call. With a flush draw you have an ~18% chance of making your hand on the turn, so, in this simplified example, calling to draw for a flush is in fact incorrect.
Someone correct me if I'm wrong here.