The BPI in November 2016 had stood at 0.68 points.
"The country's buying sentiment was consistently recovering since July 2016, but the surprise demonetisation announcement was the biggest factor causing unnatural fluctuations in the buying sentiment as reflected by the Index," TRA Research CEO N Chandramouli said today.
Noting that the buying sentiment in December has fallen precipitously to the lowest in nine months, he said the the December drop was probably when the pain of demonetisation began to be felt more severely after the first salary cycle.
The three cities which showed a medium fall in BPI were Mumbai (58 per cent), Pune (46 per cent) and Chennai (35 per cent), while, Bengaluru and Hyderabad had a lower negative impact of the note ban with a drop of 16 per cent and 15 per cent, respectively.