Shares of Persistent Systems plunged 4.62 per cent to Rs 4,973.50. Coforge shares slipped 3.82 per cent to Rs 4,418. 40. Mphasis, Cyient and Zensar Technologies declined 3.71 per cent, 3.10 per cent and 2.80 per cent, respectively. LTIMindtree dropped 2.14 per cent to Rs 4,838.