Now i usually select a Basket and a model. Each model is specific to a product. When I select a model I would like the KPI to show a percentage of how much the model (and selected basket) comprises of the whole product volume sold. For example: I select on Basket "A" and model "SUV". I would like the KPI to show: 5 / (5+10+2+7) = 20,8%
Is there a way to formulate an equivalent set analysis for my KPI?