A funnel chart is a graphical representation of a process that shows the progressive reduction of a set of values. It is used to visualize the stages of a process, such as sales, marketing, or customer service. The chart is shaped like a funnel, with the widest part at the top representing
From Wikipedia
Funnel charts are a type of chart, often used to represent stages in a sales process and show the amount of potential revenue for each stage. This type of chart can also be useful in identifying potential problem areas in an organization's sales processes. A funnel chart is similar to a stacked percent bar chart.