Parry rates, block % and armor calculations

[ulti_19]

Do you know what the % is though, with maxed parry rates or % blocked with full 30 strength and 0 strength?
Like do you block 20% dmg with 0 str with a 10% chance with 0 dex. or block 30% dmg with 20 strength and 15% chance with 10 dex? Something like this.