Potbelly (PBPB) came out with quarterly earnings of $0.08 per share, beating the Zacks Consensus Estimate of $0.05 per share. This compares to earnings of $0.04 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of 60%. A quarter ago, it was expected that this sandwich restaurant operator would post earnings of $0.05 per share when it actually produced earnings of $0.08, delivering a surprise of 60%.Over the last four quarters, the ...