Sales appear to be down in October compared to August and September. The picture comes from a business that has sales activity only on days when the financial markets are open. Because of the way that weekends and holidays fell in 2003, October had fewer trading days than August and September.
I'm a little bit confused by the last sentence. I understand the meaning which is: "The number of weekends and holiday days fell...". Is the last sentence written properly? Would you write it too or it does not simply sound right to you?