Gref said in a televised interview at a conference in Sochi that Sberbank's profit in 2015 would be half as much as in 2014.
But he later told journalists from Russian news agencies that the bank's profit this year would likely be around 30 percent lower than last year. Sberbank, along with several other large Russian state banks, is under Western sanctions over the Ukraine conflict and has seen its profits hurt by large loan-loss provisions as the economy has slumped.
Its earnings were 44 percent lower than a year earlier in the second quarter.