Indonesian president Joko Widodo was declared on Tuesday to have won 55.5 per cent of the vote; Prabowo Subianto and his supporters continue to reject the result.

Indonesian president Joko Widodo has been formally declared the winner of Indonesia’s national election – but rival Prabowo Subianto rejects the result.

The election was held last month in the nation of around 260 million people, the world’s third largest democracy. Final figures from more than 800,000 polling stations were released at 2am on Tuesday, in an effort to minimise unrest over the result.

The nation’s General Elections Commission (KPU) said Widodo, widely known as Jokowi, won 55.5 per cent of the votes compared to Subianto’s 44.5 per cent. An unexpectedly high 80 per cent turnout among voters may have helped the president raise his vote against Subianto, who was running for the second time.

Though the results had been informally known for some weeks, the formal declaration marks a new phase of the dispute between Widodo and Subianto and their parties.

The Jakarta Post reported KPU head Arief Budiman as saying the losing candidate and deputy could challenge the result in the Constitutional Court for three days after the official declaration.

Subianto apparently intends to do so, telling the media he would “continue to make legal efforts in line with the constitution to defend the mandate of the people and the constitutional rights that were seized”. The former general has said his team has found evidence of widespread cheating and vote-rigging.

The country’s Election Supervisory Agency has already rejected the claims of Subianto,and independent election observers have also signed off on the process. But Subianto supporters were yesterday reported as planning street protests.

Indonesia’s democracy is widely seen as having fallen backwards in Jokowi’s first five-year term, with erosion of human rights and the rule of law amid pressure from conservative Islamic groups.