You didn't indicate what TurboTax product you are using. If you are using the CD/Download TurboTax software, select Tax History on the Tools menu for a quick graphical comparison. For a more detailed comparison, switch to forms mode and look for the Two-Year Comparison in the forms list on the left side, near the end of the federal return.
I don't know if the Two-Year Comparison is available in TurboTax Online. If it is, it would be in the PDF when you print your return and select the option to include all worksheets.
