subscription cost of subscription revenue consists of third-party royalties and expenses related to operating our network infrastructure , including depreciation expenses and operating lease payments associated with computer equipment , data center costs , salaries and related expenses of network operations , implementation , account management and technical support personnel , amortization of intangible assets and allocated overhead . we enter into contracts with third-parties for the use of their data center facilities and our data center costs largely consist of the amounts we pay to these third parties for rack space , power and similar items . cost of subscription revenue increased due to the following : % (  % ) change 2014-2013 % (  % ) change 2013-2012 .

 | % (  % ) change2014-2013 | % (  % ) change2013-2012
----------|----------|----------
data center cost | 10% ( 10 % ) | 11% ( 11 % )
compensation cost and related benefits associated with headcount | 4 | 5
depreciation expense | 3 | 3
royalty cost | 3 | 4
amortization of purchased intangibles | 2014 | 4
various individually insignificant items | 1 | 2014
total change | 21% ( 21 % ) | 27% ( 27 % )

cost of subscription revenue increased during fiscal 2014 as compared to fiscal 2013 primarily due to data center costs , compensation cost and related benefits , deprecation expense , and royalty cost . data center costs increased as compared with the year-ago period primarily due to higher transaction volumes in our adobe marketing cloud and creative cloud services . compensation cost and related benefits increased as compared to the year-ago period primarily due to additional headcount in fiscal 2014 , including from our acquisition of neolane in the third quarter of fiscal 2013 . depreciation expense increased as compared to the year-ago period primarily due to higher capital expenditures in recent periods as we continue to invest in our network and data center infrastructure to support the growth of our business . royalty cost increased primarily due to increases in subscriptions and downloads of our saas offerings . cost of subscription revenue increased during fiscal 2013 as compared to fiscal 2012 primarily due to increased hosted server costs and amortization of purchased intangibles . hosted server costs increased primarily due to increases in data center costs related to higher transaction volumes in our adobe marketing cloud and creative cloud services , depreciation expense from higher capital expenditures in prior years and compensation and related benefits driven by additional headcount . amortization of purchased intangibles increased primarily due to increased amortization of intangible assets purchased associated with our acquisitions of behance and neolane in fiscal 2013 . services and support cost of services and support revenue is primarily comprised of employee-related costs and associated costs incurred to provide consulting services , training and product support . cost of services and support revenue increased during fiscal 2014 as compared to fiscal 2013 primarily due to increases in compensation and related benefits driven by additional headcount and third-party fees related to training and consulting services provided to our customers . cost of services and support revenue increased during fiscal 2013 as compared to fiscal 2012 primarily due to increases in third-party fees related to training and consulting services provided to our customers and compensation and related benefits driven by additional headcount , including headcount from our acquisition of neolane in fiscal 2013. .

Question: from the years 2014-2013 to 2013-2012 , what was the change in percentage points of data center cost?
Program: subtract(10, 11)
Answer: -1.0