Avoidance stats suffer from diminishing returns ("DR"), meaning the rate of return for each point contributed from gear is not constant. The in game tooltips will show the undiminished value, but the amount actually received is lower. Base stats and talents are not affected by DR, but stats from gear are diminished. The basic formula to calculate the diminished part of a stat is as follows: (Note that standard algebraic operator precedence applies to the denominator. Multiply k by c, then add b.)