Here are some statistics about Termination for Medical Reasons (TFMR):
Pregnancies with major congenital fetal abnormalities: Most pregnancies with a major congenital fetal abnormality end in TFMR. The percentage of pregnancies that end in TFMR can range from 70% to 95% depending on the severity of the abnormality.
Stillbirth: TFMR is almost twice as common as stillbirth. In 2018, Tommy's statistics reported 2,943 babies lost after being stillborn, while the DHSC reported 3,269 TFMR during that same time period.
Down's syndrome: 20% of TFMRs are due to Down's syndrome.
Pregnancies with Turner syndrome: Turner syndrome leads to the highest rate of pregnancy termination (100%).
Pregnancies with Klinefelter syndrome: Klinefelter syndrome leads to the second highest rate of termination (73.9%).
In the UK, over 70% of congenital anomalies are detected during pregnancy and, of those, around 37% will result in TFMR. In Europe, the prevalence rate of TFMR is 4.6 per 1,000 births.
Seven percent of women cited health concerns for themselves or possible problems affecting the health of the fetus as their most important reason in 2004, about the same as in 1987.
It's hard to tell what you're actually asking but the Louisiana department of health claims it's about 1 in 10,000 die from pregnancy complications [0]. University of California San Francisco claims 6%-8% of pregnancies are high risk [1].
The World Health Organization claims a global rate of 4.3 mother deaths per 1000 live births in low income countries versus 1.2 deaths per 10,000 live births in high income countries [2].