What is the percentage difference between 1580 and 1817

1817-1580= 237 

23.7% i am pretty sure.
you need to find the percent of 237 and that will help you.

Hope this helps :)

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .