The phrase "sign of change" refers to any indication or evidence that something is changing, evolving, or shifting. It can be a noticeable alteration in behavior, circumstances, or conditions that suggests an end to the status quo and the beginning of new developments. The term can also refer to a symbolic representation of transformation, such as a flag, emblem, or other visual cue that signifies progress or growth. In essence, "sign of change" is any indication that something different is happening or about to happen.