If the increase in the kinetic energy of a body is 22%, then the increase in the momentum will be

$\mathrm{P}=\sqrt{2\mathrm{mE}}$ If m is constant then 

$\frac{{\mathrm{P}}_2}{{\mathrm{P}}_1}=\sqrt{\frac{{\mathrm{E}}_2}{{\mathrm{E}}_1}}=\sqrt{\frac{1.22\mathrm{E}}{\mathrm{E}}}\Rightarrow \frac{{\mathrm{P}}_2}{{\mathrm{P}}_1}=\sqrt{1.22}=1.1$

$\Rightarrow {\mathrm{P}}_2=1.1{\mathrm{P}}_1\Rightarrow {\mathrm{P}}_2={\mathrm{P}}_1+0.1{\mathrm{P}}_1={\mathrm{P}}_1+10\mathrm{\%}\text{ of }{\mathrm{P}}_1$

So the momentum will increase by 10%