Let's take 1/5 as an example. Okay so percents are usually x/100. So what times 5 equals 100? 20! So we multiply both the top and bottom by 20. 1 x 20= 20 and 5 x 20= 100. So it would be 20/100 as a fraction. Now since a percent is out of 100, then you just take the 20 as a percent. The answer to this would be 20%. Now for numbers that don't easily go Into 100. Let us look at 2/3. You would have to divide 2 by 3 which is .6666. Now put decimal two places to the right. Percent is 66%