costs and expenses our total costs and expenses were as follows: .
|( in millions )|fiscal years ended march 31 2018|fiscal years ended march 31 2017 ( 1 )|fiscal years ended april 1 2016 ( 1 )|fiscal years ended 2018|fiscal years ended 2017 ( 1 )|2016 ( 1 )|
|costs of services ( excludes depreciation and amortization and restructuring costs )|$ 17944|$ 5545|$ 5185|73.0% ( 73.0 % )|72.9% ( 72.9 % )|73.0% ( 73.0 % )|
|selling general and administrative ( excludes depreciation and amortization and restructuring costs )|2010|1279|1059|8.2|16.8|14.9|
|depreciation and amortization|1964|647|658|8.0|8.5|9.3|
|restructuring costs|803|238|23|3.3|3.1|0.3|
|interest expense net|246|82|85|1.0|1.1|1.2|
|debt extinguishment costs|2014|2014|95|2014|2014|1.3|
|other income net|-82 ( 82 )|-10 ( 10 )|-9 ( 9 )|-0.3 ( 0.3 )|-0.1 ( 0.1 )|-0.1 ( 0.1 )|
|total costs and expenses|$ 22885|$ 7781|$ 7096|93.2% ( 93.2 % )|102.3% ( 102.3 % )|99.9% ( 99.9 % )|
( 1 ) fiscal 2017 and 2016 costs and expenses are for csc only and therefore are not directly comparable to fiscal 2018 costs and expenses . during fiscal 2018 , we took actions to optimize our workforce , extract greater supply chain efficiencies and rationalize our real estate footprint . we reduced our labor base by approximately 13% ( 13 % ) through a combination of automation , best shoring and pyramid correction . we also rebalanced our skill mix , including the addition of more than 18000 new employees and the ongoing retraining of the existing workforce . in real estate , we restructured over four million square feet of space during fiscal 2018 . costs of services fiscal 2018 compared with fiscal 2017 cost of services excluding depreciation and amortization and restructuring costs ( "cos" ) was $ 17.9 billion for fiscal 2018 as compared to $ 5.5 billion for fiscal 2017 . the increase in cos was driven by the hpes merger and was partially offset by reduction in costs associated with our labor base and real estate . cos for fiscal 2018 included $ 192 million of pension and opeb actuarial and settlement gains associated with our defined benefit pension plans . fiscal 2017 compared with fiscal 2016 cos as a percentage of revenues remained consistent year over year . the $ 360 million increase in cos was largely related to our acquisitions and a $ 31 million gain on the sale of certain intangible assets in our gis segment during fiscal 2016 not present in the current fiscal year . this increase was offset by management's ongoing cost reduction initiatives and a year-over-year favorable change of $ 28 million to pension and opeb actuarial and settlement losses associated with our defined benefit pension plans . the amount of restructuring charges , net of reversals , excluded from cos was $ 219 million and $ 7 million for fiscal 2017 and 2016 , respectively . selling , general and administrative fiscal 2018 compared with fiscal 2017 selling , general and administrative expense excluding depreciation and amortization and restructuring costs ( "sg&a" ) was $ 2.0 billion for fiscal 2018 as compared to $ 1.3 billion for fiscal 2017 . the increase in sg&a was driven by the hpes merger . integration , separation and transaction-related costs were $ 408 million during fiscal 2018 , as compared to $ 305 million during fiscal 2017. .

Question: in fiscal 2018 what percentage of total costs and expenses was costs of services ( excludes depreciation and amortization and restructuring costs ) ?
Answer: 0.78409