To find what percent 455 is of 700, you can use the following formula:
\[ \text{Percentage} = \left( \frac{\text{Part}}{\text{Whole}} \right) \times 100 \]
In this case, the part is 455 and the whole is 700. Plugging in the values:
\[ \text{Percentage} = \left( \frac{455}{700} \right) \times 100 \]
Calculating the fraction:
\[ \frac{455}{700} = 0.65 \]
Now, multiply by 100 to convert it to a percentage:
\[ 0.65 \times 100 = 65 \]
Therefore, 455 is 65% of 700.