Card showing value incorrect from using Measure in DAX query

Hello,

  I have a table, which I am creating a measure to calculate a sum of a column from another table.

GrandTotalAgingDays = SUM(Merge1[AgingDays])

 

   This value looks to be somewhat correct when I map it to the card, however the card is showing it 814K. (The actual value is 813, 528). I want to show the 813,528 and checked the following:

 

1) The field it is summing from the other table is defined as a whole number, but I do notice it has the  next to it.

 

2) The GrandTotalAgingDays is defined as a whole number

 

  Any ideas ? (I'm open to doing this calculation in PowerQuery if necessary)