I have an educational table looking at improvements in students learning and need help calculating improvements in years and months.
I have figures such as 9 years and 9 months, as 9.09 improving to 10 years 4 months 10.04. I need to work out how to calculate the formula to work out that the change is 7 months.
Is there a certain format that would help and what function do I need to work out the improvement or change?
Any help very much appreciated!!!! xxx