TOKYO (Reuters) - Shares in Nissan Motor ( NSANF ) slumped as much as 10% in Tokyo trading on Friday after the company said the previous day it will cut 9,000 jobs and 20% of its global manufacturing capacity as it faces struggling sales in China and the United States.

The decline put the shares on track for their biggest one-day drop since August. Shares last traded down 8.5% at about 375 yen, around their lowest level in four years.

Japan's third-biggest automaker slashed its annual outlook by 70% on Thursday and scrapped its net profit forecast due to its ongoing restructuring efforts, which it said would cut costs by 400 billion yen ($2.61 billion) this financial year.

Like many foreign automakers, Nissan ( NSANF ) is struggling in China where BYD and other Chinese rivals are rapidly winning market share with affordable electric vehicles and hybrids that are equipped with advanced software.

Nissan ( NSANF ) is also challenged in the U.S., where it lacks a line-up of petrol-electric hybrid cars - a vehicle type that has enjoyed strong demand.

CEO Makoto Uchida told a press conference on Thursday that Nissan ( NSANF ) had not foreseen hybrids taking off in the U.S. as quickly as they did.

($1 = 153.2000 yen)