A percent is one part of a whole divided into 100 equal pieces.
A percent can be represented by a grid model,
a fraction circle, a fraction strip, or a number line.
The grid is divided into 100 equal pieces, and 45 pieces are shaded.
So, the grid represents 45%.

The fraction strip is divided into 3 equal pieces, and 1 piece is shaded.
1 out of 3 pieces is the same as $33\frac{1}{3}$ out of 100 pieces.
So, the fraction strip represents $33\frac{1}{3}\%$.

The fraction circle is divided into 4 equal pieces, and 3 pieces are shaded.
3 out of 4 pieces is the same as 75 out of 100 pieces.
So, the fraction circle represents 75%.

On the number line, the distance from 0% to 100% is divided into 3 equal sections.
The distance from 0% to the dot is equal to 2 of those sections.
2 out of 3 pieces is the same as $66\frac{2}{3}$ out of 100 pieces.
So, the number line represents $66\frac{2}{3}\%$.
