My dataset consists of various demographic measures and dimensions and I need to do a lot of comparisons. In order to save some time, I'm trying to create something that works somewhat like a lookup/comparison function for my dataset. Let's say the population of the U.K. in 2020 is approx. 67M people according to my dataset, I would like to know whether any country in my dataset has a similar value for Total Population in 2050. I've tried my luck with a couple of parameter / calculated field constructions but have had no success so far.
I'm fairly new to Tableau so I hope this question is not too basic. Let me know if I need to clarify (I've attached a 10.5 version sample of my workbook) and thanks in advance for your help!