i want to create a digital conter that will display a count or a sum of a orders compared to the previous two periods i selected
for example if i choose this year i will get the sum of products for last year and the year before
if i choose last month i will get the sum of products for last years week and the year before
sum for year 2016
sum for year 2015
sum for year 2014
sum for year 2016 week 2
sum for year 2015 week 2
sum for year 2014 week 2
thank you
