Line l\displaystyle {l} is given by y=245x\displaystyle {y}={2}-\frac{{4}}{{5}}{x}, and the point P\displaystyle {P} has the coordinates (8,6)\displaystyle {\left({8},{6}\right)}. Find the equation of the line containing P\displaystyle {P} and perpendicular to l\displaystyle {l}.