Step 1: Identify the size of the pot. This is the size of the pot after your opponent has bet, including all of the money in the pot before your opponent bet and the amount he bet that you're allowed to call.
$1.70
Step 2: Identify the size of the bet. This is how much you're calling.
$1.03
Step 3: Determine your equity by one of the previously mentioned methods (using PokerStove or others).
I'm having trouble finding his shoving range
Step 4: Figure the fraction bet size/(bet size + pot size). If your equity is larger than this, then a call is +EV. If your equity is lower than this, then a call is -EV. If your equity is exactly this, then a call has the same EV as a fold.
1.03/(1.7+1.03)
1.03/2.73
I need about 38% equity to call, please correct me if I'm wrong
