778.57% is the change from 70 to 615
Calculation steps:
[( 615 - 70 ) ÷ 70] x 100 = 778.57%
Formula
Percentage change = [(615 - 70) / 70] x 100
Subtract the new number by the original number
615 - 70 = 545
545 ÷ 70 = 7.785714285714286
7.785714285714286 x 100 = 778.57%