Objective to create , A Funnel chart is a type of chart, often used to represent stages in a for example sales process
Step – 1 Open Tableau desktop , and connect to data source for example (Sample Super Store)
Step – 2 Drag Dimension “Subcategory” into rows shelf
Step – 3 Create Calculation for “Sales” filed

Step – 4 Drag “Sales” Calculated filed into Columns shelf
Step – 5 Drag “Sales” measure columns shelf
Step – 6 Make a dual axis between two measure “Calculated Field (Sales) “Sales”

Step – 7 Click on measure “Sales” then select “Show Header” option from columns shelf and then Do synchronize axis as per below screenshot

Please look below reference images to set Tool tip and Label from Mark shelf

