I've been looking around to see if this question has already been answered but I'm not finding it if it is. I'm trying to set the nunber of decimal places for aggregated columns in the tooltip. The challenge here is that I'm connected to a SSAS Tabular model, so the usual tactic of adjusting the column's format for decimal places through the Modeling>Formatting menu is not available to me. I've tried using the ROUND() function as well as the FORMAT() function, but using FORMAT() seems to convert the value to text so it can no longer be aggregated, and ROUND() is not affecting Power BI's internal calculation which shows up in the tooltip at all.
Here is a screenshot where I've simulated the basic challenge. I want the average score to be rounded to one decimal place in the tooltip.
Any suggestions?