tropies getting subtracted

Hi

My tropies are getting subtracted even if the damage to my clan is less than 50%. I got 6 and 11 tropies subtracted from my account with a defense damage of 2 and 18% only.

Can anybone help me understand why is that.

Thanks
Pulkit

If you're TH is destoyed on an attack, trophies are usually subtracted.

The trophies are subtracted in a defence if the attacker gets at least one star. So you will not only lose trophies when the attackers reaches 50%, but also when your TH falls down.