Chinese shares slump more than 3% on 7 July trading as investors remain concerned over government measures to stem price fall.
The plan demands for debt to be cut by 30%.
The business confidence index has fallen to its lowest level since September 2012.
White House call comes as Obama and Hollande discuss Greek crisis.
Francois Hollande and Angela Merkel meet in Paris ahead of euro leaders' summit on 7 July.
German finance minister said Tsakalotos will struggle to 'find a solution' to Greece's woes.
The BBC's director-general says the agreement will secure the long-term funding of the broadcaster.
Shares across Europe fell by almost 2% on 6 July after Greeks rejected conditions of a rescue package.
All EU countries now need to prepare to give humanitarian aid to Greece said Sigmar Gabriel.
After celebrating all night, Greeks woke up to to the stark reality of the country's accelerating crisis.
IBTimes UK explains the impact of the no vote on Greece and Europe.
The Australian inflation rate is at a three-year low.
Finance gurus offer their views on another critical week for Greece
Greece has been a victim of extortion at the hands of the global banking system – discuss.
Chinese cities experienced the fastest per capita GDP growth in the Asia-Pacific region in 2014, a report from the Brookings Institution has revealed.
BBA wants Osborne to scrap levy while the IoD calls for a more simple tax system.
Will the EU paymasters follow through with threats to boot Greece out of the Eurozone?
Number 10 says Cameron will do 'whatever is necessary' to protect the UK's economic security.
Bitcoin has risen by $50 in price over the last 30 days as fears of Greece leaving the euro mount.
Finance chiefs at Britain's biggest companies report a rebound in risk appetite in the second quarter.
The euro slumped against other major currencies, falling 0.4% against the dollar and 0.5% against the pound
European Parliament President Martin Schulz casts doubt over Greek government promises to reopen banks in the next few days.
Greek vote expected to strengthen Swiss franc as a safe haven option.
ECB expected to maintain Emergency Liquidity Assistance at current level.
Welfare cuts are part of Chancellor's strategy to balance budget.
Euro has not broken lows of 29 June when Greece announced the referendum.
Australia's S&P/ASX, Japan's Nikkei and Hong Kong's Hang Seng all decline.
Almost 62% voted to reject the creditors' programme. Alexis Tsipras: 'Democracy cannot be blackmailed'.
Race against time to ensure Greece remains in single currency.
Celebrations broke out in Athens following exit polls that show a clear rejection of the debt deal with the country's creditors.