"Electric vehicles (eventually) send 87 to 91 percent of the energy in the battery to the wheels. I say "eventually" because 22 percent of that energy needs to be "recaptured" through regenerative braking. Put another way, 31 to 35 percent of the energy stored in the battery is lost for various reasons, but 22 percent can be regenerated by the "brakes.""

Comparatively, ICE (internal Combustion engines) send about 16 to 25 % of energy to the wheels.

As the article states, even if your electricity is 100% coal power, very unlikely anywhere in the U.S., that EVs are still better for you and the environment than ICE vehicles.

https://www.motortrend.com/features/truth-about-electric-cars-ad-why-you-are-being-lied-to/