Mark Brown receives a $$2000$ loan with the intention of repaying the loan in $12$ months. However, at the end of two months Mr$.$ Brown discovers he can repay the loan in full. What percentage of the interest charge is Mr$.$ Brown entitiled to receive back as a rebate $($using Rule $78).$

$29\mathrm{.}49\%$

$83\mathrm{.}33\%$

$16\mathrm{.}67\%$

$3\mathrm{.}85\%$