Like a pie chart, a 100% stacked bar chart shows a part-to-whole relationship.
100% Stacked Bar Chart
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.