germantext.php

<?php
function my_give_german_text_switcher( $translations, $text, $domain ) {

	if ( $domain == 'give' && $text == '<span class="income">%1$s</span> of <span class="goal-text">%2$s</span> raised' ) {
		$translations = __( '<span class="income">%1$s</span> von <span class="goal-text">%2$s</span> erreicht', 'give' );
	}

	return $translations;
}
add_filter( 'gettext', 'my_give_german_text_switcher', 10, 3 );