Hello

I have observed that the block efficiency percentage doesn´t scale in my character sheet as i expected.

Example : I have some passive skills which add some block efficiency percentage :
From siegebraker : +15% Block efficiency & +20% block efficiency
From pretorian : +20% Block efficiency
From weaponmaster : +14% Block efficiency & +14% block efficiency

The result calculation is 83%.
My block efficiency is 47.9%

Also i have +36% block efficiency coming from gems, and +20% from my shield.

Total Block efficiency added percentage : 139%
Why the total amount is 47.9%?

Thanks to anyone who can help me to understand it!