8685.71% is the change from 7 to 615
Calculation steps:
[( 615 - 7 ) ÷ 7] x 100 = 8685.71%
Formula
Percentage change = [(615 - 7) / 7] x 100
Subtract the new number by the original number
615 - 7 = 608
608 ÷ 7 = 86.85714285714286
86.85714285714286 x 100 = 8685.71%