Mr Russo blamed the poor result on the toy sale cancellation, as well as lower promotional activity as the company moves to an everyday low pricing model, and a slow start to summer seasonal sales.
He said the full effect of the toy sale cancellation would not be known until the end of the year. "The comparable sales number has the lay-by effect of the toy sale from the first quarter, and this game is about the November-December period," he said. "It's hard to predict what the pick-up will be."
Mr Russo said as the company moved to everyday low pricing on toys, customers would start to "come back and buy those products in November and December".
Pressed on the wisdom of muddying the waters by moving both Kmart and Target to an everyday low pricing model, Mr Russo said he was "confident" but admitted he "probably went too fast" in the first six months.
"I don't have a plan B," he said.
"I've got 300 stores that knew how to win in this space about a decade ago. The only difference is a lot of new competitors are there now. We do need to set Target as a volume fashion retailer.
"Our products are ordered nine to 12 months out, so some of the changes to getting fashion and low prices right takes time. Confidence is the right word. The team is really wanting to get Target back to where it belongs and not be chasing the bottom end of the market."