human
interest expense.
|  | 2014 | 2013 | 2012 |
| --------- | --------- | --------- | --------- |
| Interest incurred | $158.1 | $167.6 | $153.9 |
| Less: Capitalized interest | 33.0 | 25.8 | 30.2 |
| Interest Expense | $125.1 | $141.8 | $123.7 |
2014 vs. 2013 interest incurred decreased $9.5. the decrease was primarily due to a lower average interest rate on the debt portfolio which reduced interest by $13, partially offset by a higher average debt balance which increased interest by $6. the change in capitalized interest was driven by a higher carrying value in construction in progress. 2013 vs. 2012 interest incurred increased $13.7. the increase was driven primarily by a higher average debt balance for $41, partially offset by a lower average interest rate on the debt portfolio of $24. the change in capitalized interest was driven by a decrease in project spending and a lower average interest rate. effective tax rate the effective tax rate equals the income tax provision divided by income from continuing operations before taxes. refer to note 22, income taxes, to the consolidated financial statements for details on factors affecting the effective tax rate. 2014 vs. 2013 on a gaap basis, the effective tax rate was 27.0% (27.0%) and 22.8% (22.8%) in 2014 and 2013, respectively. the effective tax rate was higher in the current year primarily due to the goodwill impairment charge of $305.2, which was not deductible for tax purposes, and the chilean tax reform enacted in september 2014 which increased income tax expense by $20.6. these impacts were partially offset by an income tax benefit of $51.6 associated with losses from transactions and a tax election in a non-u.s. subsidiary. the prior year rate included income tax benefits of $73.7 related to the business restructuring and cost reduction plans and $3.7 for the advisory costs. refer to note 4, business restructuring and cost reduction actions; note 9, goodwill; note 22, income taxes; and note 23, supplemental information, to the consolidated financial statements for details on these transactions. on a non-gaap basis, the effective tax rate was 24.0% (24.0%) and 24.2% (24.2%) in 2014 and 2013, respectively. 2013 vs. 2012 on a gaap basis, the effective tax rate was 22.8% (22.8%) and 21.9% (21.9%) in 2013 and 2012, respectively. the effective rate in 2013 includes income tax benefits of $73.7 related to the business restructuring and cost reduction plans and $3.7 for the advisory costs. the effective rate in 2012 includes income tax benefits of $105.0 related to the business restructuring and cost reduction plans, $58.3 related to the second quarter spanish tax ruling, and $3.7 related to the customer bankruptcy charge, offset by income tax expense of $43.8 related to the first quarter spanish tax settlement and $31.3 related to the gain on the previously held equity interest in da nanomaterials. refer to note 4, business restructuring and cost reduction actions; note 5, business combinations; note 22, income taxes; and note 23, supplemental information, to the consolidated financial statements for details on these transactions. on a non-gaap basis, the effective tax rate was 24.2% (24.2%) in both 2013 and 2012. discontinued operations during the second quarter of 2012, the board of directors authorized the sale of our homecare business, which had previously been reported as part of the merchant gases operating segment. in 2012, we sold the majority of our homecare business to the linde group for sale proceeds of 20ac590 million ($777) and recognized a gain of $207.4 ($150.3 after-tax, or $.70 per share). in addition, an impairment charge of $33.5 ($29.5 after-tax, or $.14 per share) was recorded to write down the remaining business, which was primarily in the united kingdom and ireland, to its estimated net realizable value. in 2013, we recorded an additional charge of $18.7 ($13.6 after-tax, or $.06 per share) to update our estimate of the net realizable value. in 2014, a gain of $3.9 was recognized for the sale of the remaining homecare business and settlement of contingencies on the sale to the linde group. refer to note 3, discontinued operations, to the consolidated financial statements for additional details on this business. .
Please compute the result.
what is the ratio of 2013 interest expense to 2012?
assistant
1.14632
human
what about the percentage change?
assistant
0.14632