They are the same as the normal catch rate of the Pokemon. So the catch rate of N's Klink isn't any different from a normal Klink's. I'll edit in the catch rates now.
Catch Rates:
Purrloin: 255 (33.3%)*
Pidove: 255 (33.3%)*
Timburr: 190 (24.8%)*
Tympole: 255 (33.3%)*
Woobat: 190 (24.8%)*
Sandile: 180 (23.5%)*
Darumaka: 120 (15.7%)*
Darmanitan: 60 (7.8%)*
Scraggy: 180 (23.5%)*
Sigilyph: 45 (5.9%)*
Boldore: 120 (15.7%)*
Joltik: 190 (24.8%)*
Ferroseed: 255 (33.3%)*
Klink: 130 (17.0%)*
*= Catch rate with full HP, using regular PokeBall