Complex sentence: Narrogin remained a major rail centre until the late 1970s when competition from road transport saw a reduction in the railways workforce from some 280 people to fewer than a dozen in 1995.
Split into simpler sentences: Narrogin remained a major rail centre until the late 1970s when competition from road transport saw a reduction in the railways workforce. The number of employees had dropped from some 280 people to fewer than a dozen in 1995.