When you sell stock you acquired through an Employee Stock Purchase Plan (ESPP), the net proceeds will generally show up in two different places on your tax return.
The portion of the net proceeds equal to the discount you received when you bought the stock is reported as ordinary income on your W-2, and the remainder of the net proceeds is a capital gain reported on Schedule D. That could explain the two different amounts your see.
See this TurboTax Help article for more information.