Daily escape chance from walled settlement : will decrease to 7.5% from 10% (with 1.3.0)
Daily escape chance from mobile party : will decrease to 22.5%-45% from 30%-60% (with 1.3.0) (30% from a party with more than 81 healthy men, 60% from 0 healthy man party)
If player is capturer probabilities are multiplied with 0.33 if mobile (was there since EA), 0.5 if prisoner is at player's walled settlement (new at 1.3.0)
So with 1.3.0 if you place your prisoner to one of your walled settlements escaping chance of prisoner will be 3.75% daily means nearly 25-30 days of average prisoned time.
We know this escaping thing is disturbing. When new heroes are added to game these probabilities will be decresed very much. Currently there is no replacements so it is risky to reduce daily escape chance to 2.5%s this can cause kingdoms to lose lots of settlements after losing one big army battle.
thats nice the problem is after a battle you are always near the 60% and lords escape before you even get to your walls
and if you fight during the night lords will escape in seconds hence a new day will start soon
edit: we need 1 day immunity to escapes