Macquarie Group has downgraded its full year profit forecast after first half profit fell by 24 per cent due to lower income caused by volatile markets.

Qantas shareholders vote overwhelmingly in favour of Qantas' executive remuneration, with just four per cent of votes going against the package.

Qantas says the industrial action taken by the licensed engineers union, pilots' union and Transport Workers' Union has cost the airline $68 million.

Santos has agreed to sell its entire working interest in the Evans Shoal gas field offshore northern Australia for up to $US350 million.