EMB ERJ 170/175 ER/LR
Flight Crew Air Transport Pilot (ATP)
Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Rejected Takeoff; Flight Crew Became Reoriented
Human Factors
My first officer and I were conducting a 'repo' flight.  On the takeoff roll at about 80 knots my First Officer called a reject due to the fact that we had both missed that I had not pressed the TOGA button after inputting the takeoff data and therefore did not have the 'TO ROLL TO' annunciated; but only 'TO' because I had only armed the autothrottles. I immediately pulled the power back and applied the brakes.  We pulled off the runway without incident and the brake temperatures stayed in the green the entire time.  We then re-inputted the takeoff data; got the correct annunciations and taxied back to [the] runway.  We then conducted the rest of the 'repo' flight with no further incident.I should have done a better scan of the PFD prior to taxi as well as following standard procedures.
We could have prevented the abort by properly cross-checking the FMA prior to crossing the hold short line; per the standard operating procedures. Prior to crossing the hold short line; both pilot flying and pilot monitoring are to verify autothrottle armed on the FMA (TO) and verify flight director modes ROLL and TO on FMA. In addition; as pilot monitoring; I had a second chance to cross check the ROLL and TO modes on FMA. I thought I had; but obviously did not. I can only guess that I had expected to see the correct annunciations and; therefore; thought I did.
ERJ-175 flight crew reported rejecting takeoff when the First Officer noticed the TOGA button had not been pushed.