How to create a native waterfall chart in PowerPoint?
Overview
To create a native Waterfall chart in PowerPoint is relatively easy like other charts. However, it involves a couple of minor additional steps. The waterfall charts in the Visualizer UI has the total automatically calculated and added to its chart without user action. When creating a Waterfall chart in PowerPoint, the total must be calculated in the Visualizer to create a Total for the chart. Then each variable including the total is available for the chart. Below are the additional steps required for this type of chart. As always, create a chart complete with labels, data, colors, fonts, labels etc. to start.
Step-by-Step Guide
Viewing Starter Chart with No Total

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This section explains the means to configure your chart to configure the total. Without the actions shown here, the chart will still be a Waterfall chart however all categories will be additive and there will be no total, which would look like the one above.
Selecting Total Object

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Double click to ensure that the Total is in the only category highlighted.
Setting Up Total

3, Right-click and select Set as Total.
Validating Actions

- The chart will now set the column as total.