A series RLC circuit resonates at $7500 \: \mathrm{rad} / \mathrm{s}$ for inductance $L=20 \: \mathrm{mH}$ and resistance $R=10\: \Omega$. The uncertainties in the measurement of $L$ and $R$ are $0.8 \: \mathrm{mH}$ and $0.3 \: \Omega$, respectively. The percentage uncertainty in the measurement of quality factor is ___________ $\%$ (rounded off to one decimal place).
