Mostly by replacing the use of a gasoline-burning internal combination engine car.
However I don't find anywhere claiming anywhere near <5%. Can you back that up?
Example source of manufacturers claiming >95% [0].
0: https://climate.mit.edu/ask-mit/how-well-can-electric-vehicl...
https://www.ameslab.gov/news/new-lithium-ion-battery-recycli...
There's no virtue in recycling equipment for recycling's sake alone, we do it in exactly the situations where some raw material in the equipment is expensive enough to justify the cost of the recycling process.