Question: how to calculate percentage base saturation?
Answer: Base Saturation (%) = (Base cations/CEC) x 100. Calcium Saturation (%) = (Calcium cations/CEC) x 100. Cation exchange capacity (CEC) = Base cations + Acid cations =12.4 + 4.8. Base Saturation (%) = (Base cations/CEC) x 100. = (12.4/17.2) x 100. Calcium Saturation (%) = (Calcium cations/CEC) x 100. = (10/17.2) x 100.