To find the percentage of $89 that equals $89, we can set up the equation:
\[ \frac{x}{100} \times 89 = 89 \]
To solve for \( x \), we can first isolate \( x \):
\[ x \times 89 = 89 \times 100 \] \[ x \times 89 = 8900 \] \[ x = \frac{8900}{89} \] \[ x = 100 \]
Therefore, \( 100% \) of $89 equals $89.
The answer is \( 100 \).