
Originally Posted by
Fikari
In maths, we call percentage difference or relative difference the ratio between the difference of the reference value and observed value, divided by the reference value.
Which give you :
relative difference = (x - xref) / xref
In this case (2.8 - 2.4)/2.8 = 0.4/2.8 = 0.14
Relative difference is an unitless indicator that takes into account the size of the value. For example if we considered now that the buff value weren't a 2.4 and 2.8 multiplier but a 222.4 and 222.8 multiplier, would you still call that a 40 % loss ?
Even if your maths would still give you the same result you clearly see that in this case the loss is negligible (0.18 % loss to be precise).