This is the donut chart section of the gallery. The donut chart is highly criticized in dataviz for meaningful reasons. You should read more about that before making one.If you're sure about what you're doing, learn how to build one with d3.js using the examples below.
It is of interest to note that donut chart and pie chart are built using exactly the same process in d3.js. Thus, you probably want to visit the pie section for more examples