Tax Credit in DE for Taxes paid to MD

I changed residency from MD to DE in the middle of the year. I am retired but my wife is still working in MD. I am filing out the DE form an the following information is requested:

Adjusted Gross Income from MD; MD income while a DE resident, Total Income of MD and Taxes Paid to MD.

What is the difference between Adjusted Gross Income from MD and MD Total Income of MD?

Do the reported taxes paid to MD include the 2.5% local amount?