What is the purpose of a chord transposition chart and how can it be used to simplify the process of changing chords in a musical piece?

A chord transposition chart is used to help musicians change the key of a chord progression. By using the chart, musicians can easily see how to play the same chord in different keys. This simplifies the process of changing chords in a musical piece because it provides a quick reference for finding the correct chords in a new key without having to figure it out by ear or through complex Music Theory.