Complex sentence: In particular, the cost of replacing a skilled technical employee has been estimated to be high as 120% of the yearly salary of the position, and over 50% of 900 IT leaders in US surveyed cited retention of skilled professionals as a primary concern.
Split into simpler sentences: In particular, the cost of replacing a skilled technical employee has been estimated to be as high as 120% of the yearly salary of the position. Furthermore, over 50% of 900 IT leaders in the US who were surveyed cited retention of skilled professionals as a primary concern.