18/21 as a percent

According to 'Fraction to Percentage' conversion formula if you want to know what percent of 21 is 18 you have to divide 18 by 21 and then multiply the result by 100.

Here is the complete solution:

To make it easier to calculate, you may write it as an equation:

We need to adjust the fraction to the target denominator 100. To find the required multiplier we need to divide 100 by the denominator 21:

Now we can multiply our numerator 18 by this multiplier:

so

There is also another approach - you can first multiply numerator 18 by 100 and then divide result by denominator 21 :