To order the numbers and percentages from least to greatest:
0 (assuming "O" is a typo for 0)
0.5
5.9
6
9.5
40% (0.4 as a decimal)
40% (0.4 as a decimal)
68
86
So, the order from least to greatest is:
0
0.5
5.9
6
9.5
40% (0.4 as a decimal)
40% (0.4 as a decimal)
68
86