12%=12/100=3/25
20%=20/100=1/5
35%=35/100=7/20
45%=45/100=9/20
70%=70/100=7/10
90%=90/100=9/10
65%=65/100=13/20
79%=79/100
==========================
4/100=4:100=0,04%
27/100=27:100=0,27%
78/100=78:100=0,78%
39/100=39:100=0,39%
113/100=113:100=1,13%
115/100=115:100=1,15%
497/100=497:100=4,97%