Anaerobic bacteria are being utilized for the destruction of biodegradable organic content of wastewater measured in terms of Chemical Oxygen Demand (COD). The yield coefficient $(\mathrm{Y})$ is $0.06$ gram Volatile Suspended Solids (VSS) per gram of COD. Bacterial biomass forms the sludge during the process. The proximate chemical formula of anaerobic bacteria is $\mathrm{C}_{6} \mathrm{H}_{7} \mathrm{NO}_{2}$.
The COD (in $\%$) converted into bacterial biomass is $\_\_\_\_$ (rounded off to the nearest integer).
