"The slowdown in growth is due to endogenous and exogenous factors," Subramanian said while commenting on the data.
He said the government is taking all steps to revive the economy and expressed confidence that the country would be on a high-growth path "very soon".
The government remains committed to its fiscal glide path, he added.
"The government is alive to the situation and has taken several measures including mega merger of banks (announced during the day)," he emphasised.
Finance Minister Nirmala Sitharaman on Friday announced merger of 10 public sector banks into four, thus bringing down the number of state-run lenders to 12 from 27 in 2017.
Besides this, the minister had announced a slew of measures last week, including steps to increase liquidity in the critical NBFC sector.