I just calculated, based on the global hashrate, that bitcoin mining uses between 0.1% (if all miners are S9's) and 1% (if a mix of newer and older hashers are in use) of all the electric energy generated by mankind.
maybe recheck your math?
I get the number for all electricity of 20.9 PWh (20.9X10^15)
hash rate is 16000000 Th/s, which is the equivalent of 1.185 mil S9 (boy, it's a lot).
That many S9 consume about 1.54Gwh (1.54X10^9)
1.54/20900000 [PW converted to Gw]=0.73X10^10-7
so, mining currently consumes less than 1/10000000 of all earth electricity or 0.00001%.
If being generous and assume that 50% comes from less productive macines, then 0.00002%