This could be called a "Circle Graph" or a "Pie Chart". They are most commonly used for displaying percentages and other statistics.
Pie Graph
a circle graph
A circle graph
circle graph
Circle Chart or Circle Graph
pie graph
Pie Graph
I'm pretty sure it's a Pie graph.
A pie chart is a graph that is expressed in a circle form. It usually shows your data sectioned off like pieces of a pie and colored differently.
A Pie Chart or Circle Graph
Explain the advantage and disadvantage of circle graph
a circle graph
A circle graph
Circle graph
Circle graph
Circle graph
Circle graph