    Sentence 1: BA shares were up 0.59  percent at 170 pence in early  afternoon trading , slightly  outpacing London 's FTSE 100 Index  which was up 0.28 percent .    Sentence 2: BA shares closed down  @.89 percent at 167-1 / 2 pence ,  slightly lower than London 's FTSE  100 Index which was down 0.28  percent .