Which list shows the correct order from greatest to least?

J. 4.25, 1/2, - 4/5, - 6.5
K. - 6.5, - 4/5, 1/2, 4.25
L. - 6.5, 4.25, - 4/5, 1/2
M. 4.25, - 4/5, 1/2, - 6.5