13 . pension and other postretirement benefit plans the company has defined benefit pension plans covering eligible employees in the united states and in certain of its international subsidiaries . as a result of plan design changes approved in 2011 , beginning on january 1 , 2013 , active participants in merck 2019s primary u.s . defined benefit pension plans are accruing pension benefits using new cash balance formulas based on age , service , pay and interest . however , during a transition period from january 1 , 2013 through december 31 , 2019 , participants will earn the greater of the benefit as calculated under the employee 2019s legacy final average pay formula or their new cash balance formula . for all years of service after december 31 , 2019 , participants will earn future benefits under only the cash balance formula . in addition , the company provides medical benefits , principally to its eligible u.s . retirees and their dependents , through its other postretirement benefit plans . the company uses december 31 as the year-end measurement date for all of its pension plans and other postretirement benefit plans . net periodic benefit cost the net periodic benefit cost for pension and other postretirement benefit plans consisted of the following components: .

pension benefits 2013 (1): service cost: 682
interest cost: 665
expected return on plan assets: -1097
net amortization: 336
termination benefits: 58
curtailments: -23
settlements: 23
net periodic benefit cost: 644
pension benefits 2012 (1): service cost: 555
interest cost: 661
expected return on plan assets: -970
net amortization: 185
termination benefits: 27
curtailments: -10
settlements: 18
net periodic benefit cost: 466
pension benefits 2011: service cost: 619
interest cost: 718
expected return on plan assets: -972
net amortization: 201
termination benefits: 59
curtailments: -86
settlements: 4
net periodic benefit cost: 543
pension benefits 2013 (2): service cost: 102
interest cost: 107
expected return on plan assets: -126
net amortization: -50
termination benefits: 50
curtailments: -11
settlements: 2014
net periodic benefit cost: 72
pension benefits 2012 (2): service cost: 82
interest cost: 121
expected return on plan assets: -136
net amortization: -35
termination benefits: 18
curtailments: -7
settlements: 2014
net periodic benefit cost: 43
2011: service cost: 110
interest cost: 141
expected return on plan assets: -142
net amortization: -17
termination benefits: 29
curtailments: 1
settlements: 2014
net periodic benefit cost: 122

the increase in net periodic benefit cost for pension and other postretirement benefit plans in 2013 as compared with 2012 is largely attributable to a change in the discount rate . the net periodic benefit cost attributable to u.s . pension plans included in the above table was $ 348 million in 2013 , $ 268 million in 2012 and $ 406 million in in connection with restructuring actions ( see note 3 ) , termination charges were recorded in 2013 , 2012 and 2011 on pension and other postretirement benefit plans related to expanded eligibility for certain employees exiting merck . also , in connection with these restructuring activities , curtailments were recorded in 2013 , 2012 and 2011 on pension and other postretirement benefit plans . in addition , settlements were recorded in 2013 , 2012 and 2011 on certain domestic and international pension plans . table of contents .

Questions:
how much does the service cost in 2013 represent in relation to the one in 2012?
and what is the difference between this value and the number one?

Answers:
1.2288
22.88%