need more informantion from the context

大概是说要自然风光，少些人为装饰吧。。。

Those whose accommodation had more natural views (主语，有自然风光的住所）showed（动词） an improvement of 19% ; （有19％的提升）
（those who had the same improvement（ in material surroundings but no nice view）无自然风光仅有人工装饰的住所 ）主语 improved（动词） just 4%.（只有4％的提升）