Complex sentence: The episode saw a surprise drop from the previous showing (and from last season's second episode), placing a 3.4/9 among 18-49s with 9.84 million viewers watching, but continued to lead among scripted shows outside NFL Football and "The Amazing Race".
Split into simpler sentences: The episode saw a drop from the previous showing (and from last season's second episode), being viewed by 9.84 million people, and garnering a 3.4/9 Nielsen rating/share in the key 18--49 demographic. However, it continued to lead among scripted shows outside NFL Football and "The Amazing Race".