The fraction 18/42 expressed as a percentage is 42.86%. This number tells you how much of a whole the fraction represents when you think in terms of 100 parts.
When you simplify 18/42, you get the equivalent fraction 3/7. Both fractions describe the same part of a whole, just with different numerators and denominators.
In everyday language, saying something is 42.86% of a total is often easier to understand than a fraction. It’s a quick way to compare sizes, especially in reports or charts.
The percentage is rounded to two decimal places, so the true value is a little bit higher or lower depending on the exact decimal, but 42.86% is the standard rounded figure used in most contexts.