So is there a specific amount of each color (orange, white and black/brown) a cat should have to be considered a calico? I have a male kitten who's primarily black and white but he has small patches of orange on his head tail and foot.
Calicoes are predominantly female. Your kitten is male with only small patches of orange in certain spots so I probably wouldn't describe him as calico.
If he has true red, he's a tortie/torbie/calico (all basically the same thing---a cat with both red and dark coloring---just different ways of describing the different patterns). If it's just reddish shading of brown coloring then he isn't really tortie. Hard to say without seeing him, any pics?
Usually a calico has large, well-defined patches of color. A tortie is more mixed, kind of brindled. A torbie has tabby stripes in the dark coloring (all of them have tabby stripes in the red bits).