Calculation About %

Do you remember the way to convert a fraction to a %?
How can we change the fraction $\frac{1}{5}$ to a percentage?

To convert $\frac{1}{5}$ to a percentage, simply multiply it by 100.

So, $\frac{1}{5}\times 100 = \mathbf{20}\mathbf{\%}$

Now, try this:

Change the fraction $\frac{15}{75}$ to a percentage. 

What about converting a percentage to a fraction?
Let’s change 17 % to a fraction.
It’s simple, just divide 17 by 100 to get $\frac{17}{100}$.