To estimate \( \frac{7}{15} \) to the nearest one percent, we can first convert \( \frac{7}{15} \) to a decimal.
Calculating \( \frac{7}{15} \):
\[ \frac{7}{15} \approx 0.4667 \]
Now, to convert this decimal to a percentage, we multiply by 100:
\[ 0.4667 \times 100 = 46.67% \]
Rounding this to the nearest whole number gives us:
\[ 47% \]
Thus, the best estimate of \( \frac{7}{15} \) to the nearest one percent is:
\[ \boxed{47%} \]