On the Product Categories section in the Reports tab you can see which categories of your products earn you the most.
If you manage multiple businesses you can choose what data you want to display on the top-left menu (1). You can also set a specific time period (2), you can also export your data from both the chart and the table (3), the export is generated in .xls format for Excel. The charts on the Product categories section work like the charts in most other sections in the Reports tab, and you can learn how to work with them on this article.
On the graph you will find the number of sales, the proceeds from the sale of products in these categories, the margin and the total cost of the products sold. The values for the categories are the sum of all the products included in the category. By ticking the box (4), you can track only the categories of your choice on the charts.