Question

Percentages 

Answer 1

$\frac{6}{24}\cdot100\%=\\\frac{1}{4}\cdot100\%=\\ 25\%$

Answer 2

People who said yes: $24-18=6$

Decimal: $\frac{6}{24} = \frac{6/6}{24/4} = \frac{1}{4} =0.25$

Percentage: $0.25*100=25$ --> 25%