Why accounting for NCI with partial GW?

With the Partial Goodwill method, we begin with the acquisition price of the share we are buying, as opposed to Full GW where we consider the full value of the investee, so how come we still acount for noncontrolling interests with this method?

Much appreciated!

Because if you have control over the target and apply the acquisition method, you show 100% ownership of assets, liabilities, revenue etc… even if you only bought 70% for example. The partial Goodwill method is to calculate goodwill not to account for the target on your financial statements.