This tricky chart bang out can be quite hard to read.
100% Stacked Area Chart
A 100% Stacked Area Chart is a built-in Excel chart type, with data plotted as areas and stacked so that the cumulative area always represents 100%. Stacked Area charts can show progression and composition over time, and the 100% Stacked Area Chart is meant to show the percentage that each component contributes when the cumulative total is not important.
