To find the percentage of 87 out of 342, you divide 87 by 342 and then multiply by 100 to get the percentage:
\[\text{Percentage} = \left(\frac{87}{342}\right) \times 100\]
Calculating:
\[\text{Percentage} \approx \left(\frac{0.2544}{1}\right) \times 100 \approx 25.44\%\]
So, 87 out of 342 is approximately 25.44%.