This stacked bar chart visualizes the percentage of sales performance within each product category, with horizontal bars segmented by price ranges from "Below 100" to "Above 5000." The chart uses D3 v7's `d3.stack()` to create the stacked segments, `d3.scaleLinear` and `d3.scaleBand` for positioning, and `d3.scaleOrdinal` for color mapping. Interactive tooltips display exact percentages on hover using mouse events, while SVG rendering provides the visual output.