Well explainded, but you kinda made an error with jewel.
You get 208 result taking in count only the jewel hp%, then you divided by the whole hp% to fing back a stamina amount.
You should really consider that stamina always provide 8 hp, and that hp% bring parallel stamina point that also give 8hp each but which don't stack with the true stamina, so not entering in the stamina's formulas.
take 867 raw stamina, a jewel should provide 3 additional % of this amount. Which is 26,01 bonus sta, and not 9.
9 bonus stamina couldn't result on 208 hp gain but not even 80, as hp% stat only affect true stamina ( the one displayed ).
The fact is that you would need to have a huge amount of stamina for the jewel to be more interesting than a stamprayer lvl6. As the whole hp% applie on prayer added stam, while the bonus stam provided by jewel stay as it is.
In your situation, a stamina provide 30 true stamina + (30*2.69)= 80.7 bonus sta. Which make a total of 110,7 sta, giving nearly 885 hp.
The jewel simply provide 26 bonus sta (in this case), giving 208 hp. For the jewel to give more, you would need a true stamina amount so big so that 3% of this total is bigger than 81. So considering this lower possible case, 81 bonus sta would be 3% of the total true sta, the true sta amount would be 81/3*100=2700.
Goodluck reaching that :P.
But keep in mind that it is in a 169% hp bonus situation. Still, overall, the situation in which jewel give more would be quite rare, i have no idea how much sta and hp% a 120 zerk or knight or sorc can have fully geared and buffed.
You get 208 result taking in count only the jewel hp%, then you divided by the whole hp% to fing back a stamina amount.
You should really consider that stamina always provide 8 hp, and that hp% bring parallel stamina point that also give 8hp each but which don't stack with the true stamina, so not entering in the stamina's formulas.
take 867 raw stamina, a jewel should provide 3 additional % of this amount. Which is 26,01 bonus sta, and not 9.
9 bonus stamina couldn't result on 208 hp gain but not even 80, as hp% stat only affect true stamina ( the one displayed ).
The fact is that you would need to have a huge amount of stamina for the jewel to be more interesting than a stamprayer lvl6. As the whole hp% applie on prayer added stam, while the bonus stam provided by jewel stay as it is.
In your situation, a stamina provide 30 true stamina + (30*2.69)= 80.7 bonus sta. Which make a total of 110,7 sta, giving nearly 885 hp.
The jewel simply provide 26 bonus sta (in this case), giving 208 hp. For the jewel to give more, you would need a true stamina amount so big so that 3% of this total is bigger than 81. So considering this lower possible case, 81 bonus sta would be 3% of the total true sta, the true sta amount would be 81/3*100=2700.
Goodluck reaching that :P.
But keep in mind that it is in a 169% hp bonus situation. Still, overall, the situation in which jewel give more would be quite rare, i have no idea how much sta and hp% a 120 zerk or knight or sorc can have fully geared and buffed.