The Nikkei 225 Index decreased 220 points or 0.33 percent on Monday to close at 66144 points. The decline was led by Nidec (-17.61%), Chugai Pharma (-3.45%) and Daiichi Sankyo (-3.24%). On the upside, the strongest performers were Ebara (3.38%), Screen Holdings (2.26%) and Okuma (2.25%).