Print the percent (%) symbol in LaTeX

In LaTeX, the Percent (%) symbol is used for commenting out a single line, so you can not directly type this symbol into the source code and print it.

Since this symbol (%) is a special character in LaTeX, so you have to use the \ escape character before the % character like this \%.

\documentclass{article}
\begin{document}

  % In-line comment out
  $$ \% $$
  $$ 100\% $$
  
\end{document}

Output:

Percent symbol with stix package

If you want a slightly different style of percent symbol you can load the stix package with \usepackage{stix} in the preamble and then use \%.

\documentclass{article}
\usepackage{stix}
\begin{document}

  % In-line comment out
  $$ \% $$
  $$ 100\% $$
  
\end{document}

Output:

Colored percent symbol in LaTeX

To add color first of all you have to load the xcolor package then you can use the \textcolor{<color-name>}{\%} command.

Also, you can use the siunitx package. This package provides \qty[<option>]{<value>}{\percent} command to add color to the unit and percent symbol.

• Use \qty[unit-color=<color>]{<value>}{\percent} to add color to both unit and symbol.
• Use \qty[color=<color>]{<value>}{\percent} to add color only on the percent symbol.

\documentclass{article}
\usepackage{xcolor}
\usepackage{siunitx}
\begin{document}

  % In-line comment out
  $$ 100\textcolor{blue}{\%} $$
  $$ \textcolor{red}{100\%} $$
  \centering
  Using \texttt{siunitx} package:
  $$ \qty{50}{\percent} $$
  $$ \qty[color=red]{100}{\percent} $$
  $$ \qty[unit-color=red]{70}{\percent} $$
  
\end{document}

Output: