Supplier XYZ is a reputable organization which plays a crucial role in the manufacturing of a certain product. They have 10 employees, and each employee works 8 hours every day. Each employee is paid $120 for a day's work. The company accumulates overhead expenses of $200 a day. XYZ produces 10 components everyday. However, you would like them to increase their output to 16 per day to match your needs.

To meet their new quota, they have implemented a new system which allows them to produce 16 components per day. However, this has resulted in an increase of the overhead expenses to $850 a day. The employee pay rate and their work hours are still the same. Calculate the percentage change in their multi-factor productivity.