Complex sentence: It is estimated that between 9,100 to 16,800 staff will be made redundant; apparently, these costs are accounted for in the £20 billion savings target of the Nicholson Challenge.
Split into simpler sentences: It is estimated that between 9,100 to 16,800 staff will be made redundant. These costs are accounted for in the £20 billion savings target of the Nicholson Challenge.