30%: Bone structures change substantially, at some parts ripping through fleshes.
70%: Flesh shattered due to the rapid changing of bone structures, Spine lengthened ,ripped through flesh and shows out
Face changes into that of a bat, human jaw structure is excess to bat so it was ripped out. Eye sockets widened and getting out of the far sides of the skull, whereas ears extended size swiftly. Nose gets bigger to resemble that of the big-eared bat. Hair coming out and dropping off due to fast-changing.
The transformation process slowed down and stopped, I have become a big-eard bat-winged human.
First image when idea comes out, really influenced by the Fly-remake
...I actually want to make myself into 'this' though: