The answer will depend on the degree to which the number is rounded. Without any indication of that, it is not possible to answer the question sensibly.
Rounded to a whole number it is 45
45.
As a percentage 44 out of 45 = 97.78% rounded
45 / 0.73 = 61.6438 (rounded)
.45454545 (repeating).45 is the rounded form.45%=.45
45
Zero
0.45
45
17.72 (rounded)
It is: 6.67% rounded
45 L