To be opened by another window add the attribute target="_blank"
<label>Con Vínculo </label>
<a href="https://www.google.com.gt/maps/place/Parqueo+AGEXPORT/@14.5824309,-90.5210567,15z/data=!4m5!3m4!1s0x0:0x3c37246f94a217c5!8m2!3d14.5842843!4d-90.5234009" target="_blank">Vínculo</a>
<label>Incrustado en tu sitio </label>
<iframe src="https://www.google.com/maps/embed?pb=!1m14!1m8!1m3!1d15445.167938361248!2d-90.52105674999999!3d14.582430949999997!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x0%3A0x3c37246f94a217c5!2sParqueo+AGEXPORT!5e0!3m2!1ses-419!2sgt!4v1521136049859" width="600" height="450" frameborder="0" style="border:0" allowfullscreen></iframe>
If you need to change the coordinates, according to the previous example, you must replace the following parameters:
<a href="https://www.google.com.gt/maps/@14.5824309,-90.5210567,15z" target="_blank">Original</a>
With the parameters that you must replace, imagining that it is php
since you do not specify, it would look like this:
<a href="https://www.google.com.gt/maps/@<?php echo $valor1 ?>,<?php echo $valor2 ?>,15z" target="_blank">Parametrizado</a>