Consider the following reaction sequence $\\$ $\\$ The percentage of nitrogen in product ' T ' formed is $\_\_\_\_$ \%. (Nearest integer)\\ (Given molar mass in $\mathrm{g} \mathrm{mol}^{-1} \mathrm{H}: 1, \mathrm{C}: 12, \mathrm{~N}: 14, \mathrm{O}: 16$ )