the fair value of our grants receivable is determined using a discounted cash flow model , which discounts future cash flows using an appropriate yield curve . as of december 28 , 2013 , and december 29 , 2012 , the carrying amount of our grants receivable was classified within other current assets and other long-term assets , as applicable . our long-term debt recognized at amortized cost is comprised of our senior notes and our convertible debentures . the fair value of our senior notes is determined using active market prices , and it is therefore classified as level 1 . the fair value of our convertible long-term debt is determined using discounted cash flow models with observable market inputs , and it takes into consideration variables such as interest rate changes , comparable securities , subordination discount , and credit-rating changes , and it is therefore classified as level 2 . the nvidia corporation ( nvidia ) cross-license agreement liability in the preceding table was incurred as a result of entering into a long-term patent cross-license agreement with nvidia in january 2011 . we agreed to make payments to nvidia over six years . as of december 28 , 2013 , and december 29 , 2012 , the carrying amount of the liability arising from the agreement was classified within other accrued liabilities and other long-term liabilities , as applicable . the fair value is determined using a discounted cash flow model , which discounts future cash flows using our incremental borrowing rates . note 5 : cash and investments cash and investments at the end of each period were as follows : ( in millions ) dec 28 , dec 29 .

dec 282013: available-for-sale investments: 18086
cash: 854
equity method investments: 1038
loans receivable: 1072
non-marketable cost method investments: 1270
reverse repurchase agreements: 800
trading assets: 8441
total cash and investments: 31561
dec 292012: available-for-sale investments: 14001
cash: 593
equity method investments: 992
loans receivable: 979
non-marketable cost method investments: 1202
reverse repurchase agreements: 2850
trading assets: 5685
total cash and investments: 26302

in the third quarter of 2013 , we sold our shares in clearwire corporation , which had been accounted for as available-for-sale marketable equity securities , and our interest in clearwire communications , llc ( clearwire llc ) , which had been accounted for as an equity method investment . in total , we received proceeds of $ 470 million on these transactions and recognized a gain of $ 439 million , which is included in gains ( losses ) on equity investments , net on the consolidated statements of income . proceeds received and gains recognized for each investment are included in the "available-for-sale investments" and "equity method investments" sections that follow . table of contents intel corporation notes to consolidated financial statements ( continued ) .

Questions:
what is the balance of total cash and investments as of december 28, 2013?
what about in 2012?
what is the change in balance?
what is the balance of total cash and investments as of december 28, 2012?
what percentage change does this represent?

Answers:
31561
26302
5259
26302
19.9%