What is 9/11, 3/4, - 10/50, - 20/30 least to greatest?

When I have problems such as these, I like to put them in decimal form rather then trying to find common denominator.

9/11 = 0.818

3/4 = 0.75

-10/50 = - 0.20

-20/30 = - 0.66

so least to greatest is : - 20/30, - 10/50, 3/4, 9/11