The same value can be written three ways — as a fraction, a decimal and a percentage.
$\tfrac12 = 0.5 = 50\%$ and $\tfrac14 = 0.25 = 25\%$. Percent means "out of 100".
Remember
- $\tfrac12=0.5=50\%$ · $\tfrac14=0.25=25\%$ · $\tfrac34=0.75=75\%$.
- Percent means out of 100.