SOS I need help

I've used TurboTax for years, but I am stuck on a pop up screen that is asking me to fill in the state prior depreciation amount on the car and truck expense worksheet.  When I scroll down on the worksheet, I see the federal prior depreciation amount.  Is federal and state (Massachusetts) the same amount?  If not, where can I find the state's prior depreciation amount?  I have copies of prior year returns, can I find the amount there and if so where would I find it? I truly appreciate your help!!!