Duplicates when using SUM measure

[KyleGranger]

Hi everyone, I am trying to create a measure that calculates the sum of "Allocation Hours" divided by SUM of "Hours worked" (very simple measure) to get an allocation vs actuals percentage. I noticed that if i put SUM(Allocations[Allocation Hours]) in a measure, it duplicates the data over and over again. In the picture posted below, the SUM of allocation hours should be 104.28K (when just added to a card and not a measure) but when added to a measure and applying a SUM function, all of a sudden the "Allocation Hours" comes out to 1616.66 Billion. Does anyone have any idea whats causing this? At first i thought it might be a relationship but this is happening even without brining in data from other tables. The same thing occurs if i do a SUM of the hours worked. Thank you all in advance for any help or suggestions. Appologies for the poor artwork!

[Anonymous]

Which field are you passing to the Allocation Hours card? Also, could you share a picture of the Allocations table?

[KyleGranger]

Well I found out why it was duplicating, I must have calculated it as a column instead of a measure so it was calculating the sum on a row level and then adding up all of the totals (so duplicating hundreds of times). I feel silly now, but still new to PBI so this is a good learning moment! Thank you for the quick reply.