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The car was purchased for $11833 on 03/2017. So for example, my 2018 asset details are Current Depreciation $3787, Current AMT $3017 and for 2017 it was Depreciation $2367 and AMT $1775.

But when I change the percentage to 70% it changes prior amounts as well. Should I then move to the next step and select the option saying that the numbers do not match my records and then type in the amount of all prior years depreciation as $6154 (2017+2018 depreciation numbers)

 

If I do that, it would bring my current depreciation down to $852. With 100% it would be $1775 .