To find what percent 12.5 is of 8, you can use the formula:
\[ \text{Percent} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100 \]
In this case, the "Part" is 12.5 and the "Whole" is 8. Substituting these values in gives:
\[ \text{Percent} = \left( \frac{12.5}{8} \right) \times 100 \]
Calculating the fraction:
\[ \frac{12.5}{8} = 1.5625 \]
Now multiply by 100:
\[ 1.5625 \times 100 = 156.25 \]
To round to the nearest tenth, the final answer is:
\[ 156.3 \]
Thus, 12.5 is 156.3% of 8.