pre_text: The 2022 Notes consist of the following (in thousands): (1) Recorded in the consolidated balance sheet within additional paid-in capital, net of $0.8 million transaction costs in equity. December 31, 2019 also includes $36.7 million market premium representing the excess of the total consideration delivered over the fair value of the liability recognized related to the $23.0 million principal balance repurchase of the 2022 Notes.
table: As of December 31,
table: 2019 2018
table: Liability component:
table: Principal $92,000 $115,000
table: Less: debt discount, net of amortization (12,776) (20,903)
table: Net carrying amount $79,224 $94,097
table: Equity component (1) (14,555) 22,094
question: Analyse this data from a financial earnings document. What is the change in the debt discount, net of amortization from December 31, 2019 to December 31, 2018?