Currently, the report only displays percentages for each category. It would be more informative to include the actual sales amount alongside the percentage. This will provide a clearer picture of the contribution of each category to overall sales.

Instead of displaying all categories in a single series, group similar categories together. This will make the chart more visually appealing and easier to interpret. For instance, instead of showing individual motherboard models, group them into a broader "Motherboard" category.

In addition to showing the current percentage for each category, include a comparison with the previous period (e.g., month, quarter). This will indicate whether sales are increasing, decreasing, or remaining stable for each category.

Emphasize categories that have experienced substantial changes in sales percentage. This could be done using visual cues like color coding or larger font sizes. This will draw attention to the categories that are driving sales growth or decline.

Allow users to filter the report to view data for specific time periods. This will enable them to track trends and identify patterns over time.

Make the report interactive by allowing users to drill down into specific categories or time periods. This will provide a more granular view of the data and help users gain deeper insights.

Offer options for users to customize the visualization of the data, such as choosing different chart types or selecting specific data points for analysis.

Allow users to export the report data in various formats (e.g., CSV, Excel) for further analysis or sharing.

These enhancements will make the "Orders by Category" report more comprehensive, informative, and user-friendly, providing valuable insights into sales performance and trends across different categories.