Why do you say that Project Management is the best method of implementing change?

Although change occurs continuously in the world and in our daily lives it is rarely implemented that way in organisations but rather as a series of steps; a ladder of change.
A new piece of legislation, market imperatives, management initiatives and new technology create projects that need to be managed, often across departmental or disciplinary lines.
Project Management is a methodology and a discipline which can bring significant benefits to organisations by:- Ensuring limited resources are used on the right projects Harnessing the energy of staff in achieving beneficial change Managing complex changes in an organised way Assessing risks, defining goals and key success areas and setting quality objectives.
However, every organisation has finite resources and, therefore, a limit to the number of projects it can initiate and control.
Pushing too many projects through a resource limited organisation causes gridlock and stress.
Managing the project portfolio efficiently is a fundamental principle of good project management.
Because most projects involve new ideas and learning (even a project to build houses or flats may involve new materials or unusual soil conditions or there may be new initiative for tenant selection or co-ownership schemes) project management has evolved a discipline to manage the new and unusual.
Its objective is to: define the project reduce it to a set of manageable tasks obtain appropriate and necessary resources build a team or teams to perform the project work plan the work and allocate the resources to the tasks monitor and control the work report progress to senior management and/or the project sponsor close down the project when completed review it to ensure the lessons are learnt and widely understood.
It is this structured approach that makes project management the best method for change management.

The answer by Mohammed Awwad is excellent.
Why it is excellent is - think of the alternative - you can have managed change, or unmanaged change.
What do we expect of unmanaged changes? Chaos.
When we manage change we can do it in a disciplined professional way, or a casual unprofessional way.
Which can you expect to be more successful.
That is why project management principles are important, and PM is almost always the best way to handle change.

If we consider the change as a project or process then we have to define a clear objective to achieve-which forms the final result of change-, then specify methods to perform the change, then define required resources taking into consideration required controls and applicable laws; prepare SMART targets; prepare work program then start performing work taking measures of feed back for each work stage in order to take proper actions In this sense the project management talking about setting targets based on specification taking time frame into account & providing required resources to proceed action until completing the change

1-It's Different,You may get pushback simply because it's a change2-Some Projects are More Important than Others3-There are Tough Decisions to be Made4-Implementation Takes Time

Nothing in this world is constant; changes are the fundamental components of continuous quality improvement.
We can say that in any project that will handle do have a continuous change too.
Any improvement methodology involves introducing change and measuring its impact.
Through the changes occurred during the development of a project, the project itself will be capable of providing quality responses.
Projects are practically changes; it is because of the available resources or even the needed tasks that should be completed.
And most projects involve new ideas and learning, which it is why, projects needs a proper managing methodology to discipline to manage the new and unusual.
Supported by the above quotation, it is truly right that changes will you to the way of a beautiful born of a new thing.
It only implies that a change is done because it needs to and most importantly, you implemented changes to something for good.
There is nothing wrong on revolutionizing as long as it goes from a deep analysis.