- Weapon: Electron-Pulse Gun
With their leader gone an on top of that nearly the entire command structure (starscream, soundwave, shockwave ect pp) as well I guess, the remaining cons will lay low anyway.
But my guess would be less than 100. Most likely NEST would have terminated the ones in chicago, perhaps some fled, but could not be far, so they would be found out eventually.
Some of those who where setting up the pillars in the far of regions of earth might survive.