When the pie chart is preferred over line chart

Whenever we need to so the proportions, the pie chart is preferred. Also, we need to take care that there should not be multiple categories there.

I have a pie chart where I am showing %age sales in each category. I also want to show total sales by each category along with %age

Now if you also want to show the value, we need to have one more field which will share the sales value. To do that just create a calculated field with sales only and use that in the label shelf.

Now use this in the label shelf-