If the futures margin is 10% and 10000000 yuan is put into the futures market, then the transaction with the value of 10000000 yuan actually begins. 100000 profit 10% naturally means earning100000. On the other hand, if the futures market price drops by 10%, that is, the trading loss of 100000 is 10%, then all your 100000 margin is wasted, which does not mean that the futures price drops by 10%, so you just lose/kloc. If you still don't understand, take a good look at the explanation of margin and leverage principle in the textbook.