Month-on-month, retail sales edged down by a real 4.2% in October, following a 4.9% increase in the previous month, the office said in a statement.
Serbia's gross domestic product (GDP) expanded by an annual 7.7% in the third quarter of 2021, following a 13.7% advance in the previous three-month period, according to a separate report.
On a seasonally adjusted quarterly basis, the economy expanded 1.6%, the same pace as in the second quarter.
Data also showed, that Serbia's unemployment rate stood at 10.5% in the third quarter of 2021, down by 0.6 percentage point compared to the previous quarter.
A year earlier, the jobless rate was 9.8%.
The employment rate, meanwhile, increased to 50% in the Q3, up from 47.8% a year earlier.