I guess I am confused then about the statement that "[Seniors 85+ are] only about 0.8% more likely to kill an occupant of another vehicle or a non-motorist, ove

I guess I am confused then about the statement that "[Seniors 85+ are] only about 0.8% more likely to kill an occupant of another vehicle or a non-motorist, over the course of a year." Through some sort of statistical interpretation.