If there is a clear critical/support relationship between the two datasets, an overlapping column chart can be used. Examples of such relationships include: target vs. actual sales, budget vs. spending, past vs. present values, your value vs. industry average, forecast vs. actual, or before-and-after comparisons. As an alternative to the fully nested look, there are also visual variations where the support value is shown as a notch, or thinner column next to the critical one, or where the bars partially overlap rather than being fully embedded.