This is the 13143rd most frequent German word.
angestrebten
"Angestrebten" means "desired" or "aimed for."
Here, 'angestrebten' modifies 'Veränderungen', describing the changes intended or aimed for.
Das Ziel der angestrebten Veränderungen ist eine höhere Effizienz.
The aim of the intended changes is a higher efficiency.
In this sentence, 'angestrebten' qualifies 'Ergebnisse', referring to results that were desirable or sought.
Die angestrebten Ergebnisse erforderten viel Planung und Mühe.
The desired results required a lot of planning and effort.
Here, 'angestrebten' is used to depict 'Verbesserungen', indicating improvements that were targeted or pursued.