** Shares of Cuscal CCL.AX fall as much as 7% to A$2.320 in trading debut, compared with IPO price of A$2.50 apiece
** Stock started declining after opening flat
** Payment services co raised nearly A$337 mln ($221 mln) in the IPO with A$479 mln market value, according to a statement
** Almost 1.7 mln shares change hands
(Reporting by Adwitiya Srivastava in Bengaluru)
((Adwitiya.Srivastava@thomsonreuters.com;))