Question

how to change a fraction in a percent without a calculater

Answer 1

try to get the denominator to 100 and then the numerator will be your percent

Answer 2

An easier way.. just divide the denominator into the numerator and take the percent as the first 2 places to the right of the decimal.
Example:
What percent is 4/5?
4 divided by 5 is 0.80...Thus your percent is 80%