This percentage bar chart uses a horizontal bar layout to show a direct linear relationship between amount and percentage values. The bars extend proportionally from left to right, with the x-axis representing percentage and the y-axis categorizing amounts. The visualization loads CSV data using D3’s `csv` method, then renders with `scaleLinear` for the x-axis, `scaleBand` for the categorical y-axis, and `axisLeft` and `axisBottom` for the axes. SVG rectangles display the bars, colored with a deep maroon fill and styled via external CSS.