678.48% is the change from 79 to 615
Calculation steps:
[( 615 - 79 ) ÷ 79] x 100 = 678.48%
Formula
Percentage change = [(615 - 79) / 79] x 100
Subtract the new number by the original number
615 - 79 = 536
536 ÷ 79 = 6.784810126582278
6.784810126582278 x 100 = 678.48%