This is done by calculating the net assets of the subsidiary at acquisition and multiplying this by the percentage owned by the non-controlling interest. Under the fair value method, the non-controlling interest at acquisition will be higher, meaning that the goodwill figure is higher.
Goodwill is not only an intangible asset but also a capital asset. The value of goodwill refers to the amount over book value that one company pays when acquiring another. Goodwill is classified as a capital asset because it provides an ongoing revenue generation benefit for a period that extends beyond one year.
In many instances, a buyer in an asset transaction will not want to acquire any liabilities (other than contracted obligations for future performance). In those instances, the working capital adjustment will look only at current assets.
The biggest difference is that an SPA is the sale of all shares, and an APA is the sale of selected assets. Therefore, they are both different transactions and have different procedures.