1/5, 5/8, 2/3 from least to greatest.
1/5 = 0.20 x 100% = 20%
5/8 = 0.625 x 100% = 62.50%
2/3 = 0.667 x 100% = 66.70%
It is easier to convert dissimilar fractions into decimals to know which fraction has greater or lesser value compared to the other fractions.