user: Question: what is the natural change (per 1000) when the live births 1 is 278 977?
Columns: ['Average population (x 1000)', 'Live births 1', 'Deaths 1', 'Natural change 1', 'Crude birth rate (per 1000)', 'Crude death rate (per 1000)', 'Natural change (per 1000)']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['6 703', '252 000', '97 000', '155 000', 37.6, 14.4, 25.9]
SQL:

assistant: SELECT "Natural change (per 1000)" FROM "Table" WHERE "Live births 1" = '278 977';