Learn how to transform raw Excel data into an interactive, year-over-year (YoY) sales comparison dashboard using Power BI Desktop. Starting with data import and formatting, this guide covers setting up custom currency and date hierarchies, configuring a dynamic line chart with slicers, and adding metric cards with custom borders and padding. By breaking down dates to plot month on the X-axis and year in the legend, you can instantly analyze multi-year performance trends side-by-side.
To ensure your reports remain clear in print or grayscale formats, this tutorial also demonstrates how to apply unique data point markers for each individual year line. Whether you are building executive reports or quick operational views, these step-by-step formatting techniques—including custom visual titles and alignment tweaks—will help you deliver clean, professional data visualizations every time.
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