Decide what place value you want your decimal to represent, such as tenths, hundredths or thousandths. Underline the place value so you have a reference point for rounding.
Round your repeating decimal to the nearest place value of your choice. For example, if your repeating decimal is .555555 and you want to round it to the nearest hundredth, you would round off your decimal as .56 because when rounding if the number to the right of your place value is five or greater you round up. If it were four or less, you would stay the same. For example, .444444 would be rounded to .44.
Multiply your rounded decimal by 100 to get a percent.