10/90 = ≈11.11%
Rounded to 2 decimal places.
A value like 10/90, or about 11.11%, can show up when 10 people out of a group of 90 respond to a survey or use a particular service. It might also describe a small share of a budget, such as 10 dollars out of every 90 dollars spent.
To picture it quickly, imagine dividing 90 items into nine equal groups of 10, then taking one group. That is a little more than one-tenth, so estimating it as about 11% is usually close enough.
A common mistake is to think 10/90 is 10% simply because the numerator is 10. The denominator matters too, because the fraction compares 10 with 90 rather than with 100.