About ~480 - ~500mm against kinetic (like DM33) in early 99 and probably about ~540mm against KE for 99 late according to ~70 degrees UFP - that's all without ERA FY-IV, which increases it's protection up to 25-30% against KE because of thickness of throwing plate.
If we talk about 99A, according to UFP degrees back to ~68 deg. and increased thickness (up to about ~230mm - ~250mm against ~205mm - 225mm for 99-II), it should have about ~600mm against KE without ERA.
P.S. That's only assumptions, since none of armor packages documents were published.