Original sentence: Olbermann's show "Countdown" posted the largest gains (+76%) in total viewers for the first quarter of 2007 over the first quarter of 2006 in the 8pm timeslot, while O'Reilly's gains during that period were +5%, Paula Zahn's -10%, and Nancy Grace's +12%.Overall, O'Reilly still commanded the largest number of total viewers for that time slot in the first quarter of 2007, Olbermann, the second largest
Edited sentence: O'Reilly gains during that period were(+5%), Paula Zahn (-10%), and Nancy Grace (+12%).Olbermann's show "Countdown" posted the largest gains in total viewers for the first quarter of 2007 over the first quarter of 2006 in the 8pm timeslot; at +76%, Countdown's gains improved, but still remained in O'Reilly's shadow with about 25- 50% of his prime time audience.Overall, O'Reilly still commanded by far the largest number of total viewers for that time slot in the first quarter of 2007, Olbermann, the second largest