Wave Two corrections can be either; simple or complex.

A simple correction is primarily a three step (A, B, C) zig-zag pattern where wave B of the pattern is no more than a 75% retracement of  the Major Wave One.  A wave B that retraces 38 to 62% of Wave A  typically produces a Wave C that equals wave A or 1.62% of Wave A.

A normal Retracement for B = 38% to 62% of A.  Maximum B = 75% of A.

The maximum retracement of a  Wave 2 = 75% of Wave 1.