India recorded 4,451,753 Jains at the 2011 census, about 0.37 per cent of the population. No reliable source divides that between the two traditions, and the proportions sometimes quoted are unsourced. The honest statement is that Svetambaras predominate in Gujarat, Rajasthan and coastal Maharashtra, and Digambaras further south and east.
Svetambara monastic numbers are substantially larger than Digambara ones. A survey from the 1970s and 1980s counted roughly 1,200 monks and 3,400 nuns. Those figures are dated, but the ratio between the sexes is a durable feature and follows directly from the doctrine.
Jain influence is out of all proportion to Jain numbers, and the reason is commercial and philosophical rather than demographic. The prohibition on occupations involving harm to living beings pushed Jain communities historically into trade, finance and jewellery, where they became disproportionately prosperous, and Jain merchant philanthropy has built temples, libraries, hospitals and animal shelters far beyond what four million people would ordinarily sustain. The doctrine of anekantavada, the many-sidedness of reality, that any statement is true only from a standpoint, and that the standpoints must be held together, is Jainism's most exportable idea and among the more sophisticated things any tradition has said about disagreement.
The sallekhana question applies here equally. The Rajasthan High Court held the fast to death to be suicide in August 2015, and the Supreme Court stayed that ruling on 31 August 2015. The practice continues while the matter is unresolved.