Singapore’s changing demography

The population of Singapore used to be 75% Chinese, 12% Malay, 8% Indian and 5% Others or thereabout, plus or minus here and there. What is the racial distribution today? Assuming that this racial mix remains fairly unchanged, the distribution will be 37.5% Chinese, 6% Malay, 4% Indian and 2.5 Others. How so? Coz the other 50% has gone to foreigners, either PRs or transient workers. And what is