Period-over-period % change: automatic calculation, no DAX.

Bar Chart with Variation % automatically calculates and displays the percentage change between consecutive bars — in any Power BI report, with zero formulas.
Free — Automatic variation %, bar chart, Small Multiples (3 panels), sort order, tooltips, cross-filtering, horizontal and vertical scroll, high contrast mode, panel backgrounds, legend. Pro features can be tried as a watermarked preview while editing a report.
Pro — Unlock via Microsoft AppSource subscription:

One KPI card with variance, target and trend — or twelve, one per category.
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