A 100% stacked bar chart is an Excel chart type designed to show the relative percentage of multiple data series in stacked bars, where the total (cumulative) of each stacked bar always equals 100%. Like a pie chart, a 100% stacked bar chart shows a part-to-whole relationship. However, unlike a pie chart, a 100% stacked bar chart can show how proportions change over time, for example, product market share changes per year, as shown above.
Like all stacked bar charts, the first data series (next to the axis) is easy to compare visually, but subsequent data series are harder to compare, since they aren't aligned to a common element.
Able to show part-to-whole changes over time
Multiple categories and data series in compact space
Difficult to compare all but first series
Stacked bars normalized to 100% so absolute value dimension is lost
Become visually complex as categories or series are added
I was looking at an article on forbes.com about popular college degrees for women and men. They listed 9 degrees for both women and men (on many, many pages), and this chart is just a mash-up of the data they cited,...
This chart is an example of a 100% stacked column chart. The data shown in the chart represents projects over a three year period, categorized as hit goals, missed goals, and exceeded goals. I think this is a good...