What is the difference between Previous and Last when using quick table calculation "Difference" and then choosing "Relative To" Previous or Last?
Previous = the row before this one
Last = the very last row in the partition
Next = the next row after this one
First = the very first row in the partition
These are the answers to Tableau's question "What do you want me to compare this row to when I calculate the difference?" You answer will change the results.
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