I don't understand the calculation on loss of sales of our previous home

[ColeenD3]

No one can see your screen. You would have to spell everything out.

[SweetieJean]

Since you are asking from Premier, was it ever rented out (in whole or in part), or did you ever claim a home office deduction for it?  Also,  be sure you are using the 1099-S form information.  Any mortgage payoff is not part of the gain/loss calculation.