Performance reviews help companies and their managers evaluate an individual’s performance, but what they don’t do is help those employees improve their performance. Sixty-two percent of employees say they don’t see changes occur from feedback they give – but who is actually to blame?Performance reviews help companies and their managers evaluate an individual’s performance, but what they don’t do is help those employees improve their performance. Sixty-two percent of employees say they don’t see changes occur from feedback they give – but who is actually to blame?