i can calculate it in my head, i think.
pastel enchi to pastel: 12,5% normals 12,5% enchi 25% pastel 25% pastel enchi 12,5% super pastel 12,5% super pastel enchi.
pastel enchi to spider: 12,5% normals 12,5% spider 12,5% enchi 12,5% enchi spider 12,5% pastel 12,5% pastel spider 12,5% enchi pastel 12,5% enchi pastel spider.
there you are.