There are 12 pairs of cranial nerves that are part of the PNS. These nerves are sensory, mixed and mostly motor.
Cranial nerves III (oculomotor), IV (trochlear), VI (abducens), XI (accessory), and XII (hypoglossal) are motor nerves only.
Cranial nerves VII, IX and X are called mixed nerves because they contain both motor and sensory nerves.
Olfactory
What 12 structures receive and send sensory and motor signals between the body and brain
Sensory nerves are the nerves that allow people to experience taste, touch, smell, sight, and hearing. For sight, there are photoreceptors; for hearing, there is stereocilia; for touch, there are motor neurons, and for smell there are olfactory sensory nerves.
The Optical nerver or the Second Cranial nerve controls and relays information absorbed through the rods and cones of the eye. Eye movements (eye muscles), however, are controlled by several other cranial nerves including the Oculomotor, Abducens, and Trochlear nerves.
Somatic sensory nerve impulses get to the brainstem from the head itself via the cranial nerves. Cranial nerves are also known as cerebral nerves.
Some are sensory nerves, some are motor nerves
The listed cranial nerves provide both sensory and motor innervation:Trigeminal nerve (CN V)Facial nerve (CN VII)Glossopharyngeal nerve (CN IX)Vagus nerve (CN X)
Spinal Nerves Are Both Sensory and Motor. Spinal nerves are not one or the other.
I dont know the percentage but the 3 types of it are Sensory nerves Motor nerves Mixed nerves