first line, as in "Damage at 44" is basically the Base damage your style will do. For a level 29 style it would be "Damage at 29", for a level 18 style it would be "Damage at 18" and so on.
Damage at 65/74 are the style bonus values at spec 65/74, 65 is here most likely used because it would be the combined value of a spec 50 with RR5 (+4) and max +11 on the item., 74 is highest possible value with RR14.
Damage per Level is the growth rate of the style, so each +1 in the according spec will increase the Stylebonus by +5 in this case.
Those values are generated by the following:
(STYLE_BASE + (SPEC - STYLE_LEVEL) * STYLE_GROWTH)
as in for the 65 it would be:
>>> 132 + (65 - 44) * 5
237
or for 74:
>>> 132 + (74 - 44) * 5
282
But you probably noticed that you won't get actually 237 damage extra per style, that is because the values there are used with an theoretical combination from damagemodifier multiplied by weaponspeed of 10 (i.e. 4s weaponspeed and 2.5 damagemodifier, or 5s weaponspeed and 2.0 damagemodifier.).
So the full formula just for the style damage is:
STYLE_DAMAGE = (STYLE_BASE + (SPEC - STYLE_LEVEL) * STYLE_GROWTH)
* SWING_SPEED
* DAMAGE_MODIFIER / 10
+ BASE_DAMAGE * TOA_STYLE_BONUS
So assuming you have 65 spec in that line and you hit now someone with a 2s swingtime weapon, and the damagemodifier says 1500, then you know that 71 damage of the total was the style bonus.
>>> (132 + (65 - 44) * 5) * 2 * 1.5 / 10
71.1
The remaining whatever points are defined by your weapon unstyled damage.
I hope that answers most of it, if needed and you can provide me a screenshot with your weaponspeed/qui/haste/spec etc then i can do a more non-fictional example
(also all of this is basically written down here in detail https://camelotherald.fandom.com/wiki/Melee_Damage)
