Convert fraction into percentage.

$\frac{21}{13}$

Converting fraction into percentage is as follows:-

$\frac{21}{13}$$=\frac{21}{13}\times 100\%$ $\because$ Multiply by $100$

$=\frac{2100}{13}\%$

$=161.53\%$ $\because$ On dividing $2100$ by $13$

Hence, $\frac{21}{13}$$=161.53\%$