According to the information given in the exercise, you know that the 100% is 80.
Let be "x" the number that is the 53% of 80.
By definition, you can write 53% as a Decimal number by dividing it by 100. Then, this is:
[tex]\frac{53}{100}=0.53[/tex]You can write 100% as a Decimal number:
[tex]\frac{100}{100}=1[/tex]Knowing the above, you can set up the following proportion:
[tex]\frac{80}{1}=\frac{x}{0.53}[/tex]Now you must solve for "x":
[tex]\begin{gathered} (0.53)(80)=x \\ x=42.4 \end{gathered}[/tex]The answer is:
[tex]42.4[/tex]