HOW do you get the percentage? Please show the calculation.

Thank you

Sales Territory Southern % 100.0 Total Company Northern Amount % Amount $ 900,000 100.0 $ 400,000 408,000 168,000 492,000 100.0 232,000 342,000 212,000 150,000 100.0 $ 20,000 123,000 $ 27,000 100.0 Sales Variable expenses Contribution margin Traceable fixed expenses Territorial segment margin Common fixed expenses Net operating income % Amount 100.0 $ 500,000 240,000 100.0 260,000 130,000 100.0 $ 130,000 100.0 100.0