How to create summary table based on selected filters slicers

Question

I am trying to create a visualization based on the quantity and purchase value with data close to the ones given below. But the quantity must be the sum of products purchased by a retailer for the selected period. These products may change the selected items in the filter. 

Answer 1

Here are the steps you can follow：

1. Create a measure.

Quantity_new =
CALCULATE(SUM('Table'[Quantity]))

Value_new = 
CALCULATE(SUM('Table'[Value]))

2. Result.

You can download the PBIX file.