First, vectors and locations use same type variable.
Second calculate all either in world space or local space, pick your flavor, do not mix both unless you calculate/translate it to correct space.
Get Distance_Vector as Ball_Location - Point_location
Get Direction_Vector as Normalize(Distance_Vector)
Get Distance as Length(Distance_Vector)
Now you have all you need. Move_Vector would be: Direction_Vector*1/10th of circle radius (or less depends on you step for moving)
On event tick just add to Ball_location that move_vector value, and move ball to new location.
Also do not forget to adjust for frames with delta_tick from tick event.