How to pronounce 百分之百 in Cantonese (3 out of 4):

都無百分之百嘅掌握
They don't have a 100% control.

Cantonese Sentence Breakdown

dou1
all
both
entirely
(used for emphasis) even
already
(not) at all
metropolis
capital
big city
the whole
elegant
refined
without exception
also
too
still
used in a sentence to add an inference or interrogative tone
mou4
not to have
no
none
not
to lack
un-
–less
without
百分之百 baak3 fan6 zi1 baak3
one hundred percent
koi3
indignant
generous
to sigh (with emotion)
掌握 zoeng2 wai6
master