You can view the number of companies which have advances, declines or remain unchanged for the past 7 days. The number are provided exchange group wise with an option to select either of the two exchanges (BSE or NSE).
Select Date   
As on 21/09/2018
GroupAdvancesDeclinesNo Change
GB 790
IT 100
IV 020
Nifty 23270
OtherEQ 172120822
Others 4311810
SM 20813
ST 140
T 309717
Z 294