Totals based on product groups

Hi all,

I need to produce a report with the following results from this (simplified) table, there are only 2 product groups in the real table.

(Each row in the table below represents an item in a sales contract.)

Total unique count of contracts: 5 (in Rows 1-2, 3, 4-6, 7-8, 9)

Total amount freight 20 USD

Total amount products 160 USD

Total unique count of Contracts and total Amounts for Products and Freight also as a percentage for the following 3 conditions:

1.) From rows containing only items from Grp1:

Count=2 (40%), Products=95 USD (59,4%), Freight=0 USD (0%) (in Rows 7-8, 9)

2.) From rows containing only items from Grp2:

Count=2 (40%), Products=30 USD (18,8%), Freight=20 USD (100%) (in Rows 3, 4-6)

3.) From rows containing items from Grp1 and Grp2 and Freight if given:

Count=1 (20%), Products=35 USD (21,9%), Freight=0 USD (0%) (in Rows 1-2)

Could someone perhaps either point me to an example which solves a similar problem, offer a solution or at least explain if I need to use DAX? (I am sorry if I have explained the situation above too simply for some as I am unsure exactly which terminology to use to frame it otherwise.)

Thank you for your time and consideration.