How can efficiency shown in the stats be improved?
This can be increased by making progress in the game which is by doing good in battles.
Efficiency is calculated on a variety of things, but how exactly its done is not revealed by the developers. So there is nothing you can do about it, just keep playing and give your best...
how come i have no efficiency?
Hey, you have an Efficiency value of 62 506 ranking #371 977; the minus sign under "Previously" is because the previous Efficiency value is not shown for any player.
Customer support service by UserEcho