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An Area Chart is similar to a line chart that is connected using line segments. The Area Chart arranges a period horizontally, connects them by line, encodes values into points, and fills the area between the line segments and the x-axis with color. An area plot is a good chart option when you want to observe the volume change over a period. It gives the summation of the quantitative data.
It extends standard area charts by dividing data into subcategories and stacking them on top of each other. This makes it easy to see both the overall trend and the contribution of each subcategory across a period.
An Area Percent Stacked Chart subcategories and normalizes its values to 100%. This shows not only the overall changes but also the percentage contribution of each subcategory to the total.