This visualization is a donut-style pie chart that displays the average item outlet sales aggregated by outlet location type. The chart uses a categorical color scheme to distinguish each location category, with slice labels showing both the category name and its corresponding percentage of total sales. Labels are positioned using arc centroids, and a legend identifies the color-to-category mapping. The implementation relies on D3.js 6.7.0 APIs including `d3.csv`, `d3.rollup`, `d3.pie`, `d3.arc`, and `d3.scaleOrdinal`, processing data from a GitHub-hosted CSV file.