Complex sentence: Thus, the International Labour Organization contends that, globally, child labour is slowly declining, except in sub-Saharan Africa, where the number of child workers has remained relatively constant: 1 in 4 children aged 5--17 work in this region.
Split into simpler sentences: Thus, the International Labour Organization contends that, globally, child labour is slowly declining. Exempt from this statistic is sub-Saharan Africa, where the number of child laborers has remained relatively constant: 1 in 4 children aged 5--17 work in this region.