A student has been given 0.314 g of an organic compound and asked to estimate Sulphur. During the experiment, the student has obtained 0.4813 g of barium sulphate. The percentage of sulphur present in the compound is $\_\_\_\_$ . (Given Molar mass in $\mathrm{gmol}^{-1} \mathrm{~S}: 32, \mathrm{BaSO}_4: 233$ )