subtracting two card values

[wcloninger]

I have a slicer that is a dropdown list of employees. I have a table that has a survey results and includes a quality score and a speed score. I have two cards that show the quality average and speed average for all. I want those to stay static, and have two other slicers that show the averages for whoever i select in the dropdown. Then i want two other cards, to show the variance between the average of all and the person selected. Any ideas?

[amitchandak]

@wcloninger , Are these card having values based on some visual level filter, if yes, you have create measure based on that

If they are using selective slicer values, then you have to consider

Power BI Abstract Thesis: How to use two Date/Period slicers

https://youtu.be/WSeZr_-MiTg

Compare Categorical Data Using Slicers - Compare two Brands: https://youtu.be/exN4nTewgbc