How to know what's capacity loss of capacitors?

How to know what's capacity loss of capacitors?

A capacitor is marked with 220nF J, the nominal capacity of the capacitor is 220nF, the actual capacity of the capacitor should be 220nF ± 5%, where the capacity loss is ± 5%. If J is changed to K, the loss is ±10%, and the loss is about ±20% if marked M. Capacitors of mica and ceramic dielectric capacitors are lower (about 5000pF); the capacity of paper, plastic, and some ceramic dielectric capacitor is centered (about 0.005uF ~ 1uF); The Capacity of electrolytic capacitor is large.

J: ± 5%

K: ± 10%

M: ± 20%

CBB60 CAPACITOR 
CBB65 CAPACITOR
CBB61 CAPACITOR
CBB80 CAPACITOR
CBB21 CAPACITOR
CBB22 CAPACITOR
CBB20 CAPACITOR
CBB19 CAPACITOR
CD60 CAPACITOR
CL21 CAPACITOR
X2 CAPACITOR