Funnel chart in Excel

[ishpahuja]

Hi guys

I am trying to make a Sales funnel chart. I used the 100% stacked pyramid option, but it doesn't flatten at the end.
How can I make this chart with flat base in Excel if the last number is not zero? Unfortunately, I am currently using Excel2010.

Example:
Lead: 100
Pitch: 70
Interested: 60
Converted: 25

Since the last number is not 0, I do not want the funnel to look pointed at the end, rather it should have a flat base.

Thanks