Thank you for your reply.
Before I can calculate that field (employment 2015 -employment 2010) I believe I first need to calculate the total employment in 2010 and 2015. How can I do this?
So far I have "calculated" the total employment per year by using filters or by putting years in rows. This is not sufficiënt for these calculations.
I am looking forward to hearing from you.
By accident I clicked on the button that states this question has been answered. How do undo this?