Growth/Decline formula not showing all years

[User0]

Hi , 
I have to calculate growth for two brands X and Y and I have used the formula 

=(Sum(Volume)/Below(Sum(Volume)) - 1) 

but it is missing data for the last year in the graph.
Currently the selected years are 2022,2021 and 2020.

[Or]

Below(Sum(Volume)) will return null for 2020, since 2019 is not selected, so the entire formula correctly evaluates to null and no value is returned.

[User0]

I understood.
Is there any other way to calculate the growth/decline so that I can see the result for all the selected years?