Why did my State Refund decrease?

I filed my federal and state taxes before realizing there were a few fees I did not initially report in my taxes for my rental property. I began the amendment process, and after adding these fees, the Federal refund increased by $276 and my State refund increased by $51. However, my tax return form does not show this $51 as additional to the original State refund, but as the new, total amount from the State refund.

 

Can someone help me understand this?

 

Thank you.