This stacked bar chart shows the percentage distribution of sales performance across five product categories, with each bar segmented into five sales ranges from "Below 100" to "Above 5000". Hovering over a segment reveals a tooltip with the exact percentage for that category and range. The visualization uses d3.stack() to create the stacked segments, d3.scaleBand() for the categorical y-axis, and d3.scaleLinear() for the percentage x-axis. Data comes from a CSV file with pre-calculated proportions summing to 1 for each category.