The elemental composition of dry biomass of a yeast species is $CH_{1.6}O_{0.4}N_{0.2}S_{0.0024}P_{0.017}$. The contribution of carbon to the dry biomass is _________ $\%$ (round off to $2$ decimal places).

[Given: atomic weights of $H,\:C,\:N,\:O,\:P$ and $S$ are $1,\:12,\:14,\:16,\:31$ and $32$, respectively]