Complex sentence: Of this area, 63.1% is used for agricultural purposes, 29.4% is forested, 7.3% is settled (buildings or roads), and the remainder (0.2%) is non-productive (rivers, glaciers or mountains).
Split into simpler sentences: Of this area, 63.1% is used for agricultural purposes, while 29.4% is forested. Of the rest of the land, 7.3% is settled (buildings or roads) and the remainder (0.2%) is non-productive (rivers, glaciers or mountains).