of the post-closing price adjustment of $ 20 million plus interest , what percentage was recognized as part of the impairment charge on the accompanying financial statements?
the containerboard group ( a division of tenneco packaging inc. ) notes to combined financial statements ( continued ) april 11 , 1999 14 . leases ( continued ) to the sale transaction on april 12 , 1999 . therefore , the remaining outstanding aggregate minimum rental commitments under noncancelable operating leases are as follows : ( in thousands ) .

| Remainder of 1999 | $7,606 |
| :--- | :--- |
| 2000 | 7,583 |
| 2001 | 4,891 |
| 2002 | 3,054 |
| 2003 | 1,415 |
| Thereafter | 1,178 |
| Total | $25,727 |

15 . sale of assets in the second quarter of 1996 , packaging entered into an agreement to form a joint venture with caraustar industries whereby packaging sold its two recycled paperboard mills and a fiber recycling operation and brokerage business to the joint venture in return for cash and a 20% ( 20 % ) equity interest in the joint venture . proceeds from the sale were approximately $ 115 million and the group recognized a $ 50 million pretax gain ( $ 30 million after taxes ) in the second quarter of 1996 . in june , 1998 , packaging sold its remaining 20% ( 20 % ) equity interest in the joint venture to caraustar industries for cash and a note of $ 26000000 . the group recognized a $ 15 million pretax gain on this transaction . at april 11 , 1999 , the balance of the note with accrued interest is $ 27122000 . the note was paid in june , 1999 . 16 . subsequent events on august 25 , 1999 , pca and packaging agreed that the acquisition consideration should be reduced as a result of a postclosing price adjustment by an amount equal to $ 20 million plus interest through the date of payment by packaging . the group recorded $ 11.9 million of this amount as part of the impairment charge on the accompanying financial statements , representing the amount that was previously estimated by packaging . pca intends to record the remaining amount in september , 1999 . in august , 1999 , pca signed purchase and sales agreements with various buyers to sell approximately 405000 acres of timberland . pca has completed the sale of approximately 260000 of these acres and expects to complete the sale of the remaining acres by mid-november , 1999. .

impairment_charge = 11.9
price_adjustment = 20
percent_impairment = impairment_charge / price_adjustment
answer = percent_impairment * 100