A waterfall chart, also known as a cascade chart or a bridge chart, is a graphical representation of the changes in value between multiple stages in a process. This type of chart is often used to illustrate how an initial value is affected by a series of positive and negative changes, resulting in a final value. Other synonyms for a waterfall chart include flying bricks chart, Mario chart, and stepped chart. While the overall concept of a waterfall chart remains the same, the specific design and formatting may differ depending on the intended audience and purpose of the chart. Regardless of the name used, a waterfall chart is a useful tool for visually representing complex data sets.