698.7% is the change from 77 to 615
Calculation steps:
[( 615 - 77 ) ÷ 77] x 100 = 698.7%
Formula
Percentage change = [(615 - 77) / 77] x 100
Subtract the new number by the original number
615 - 77 = 538
538 ÷ 77 = 6.987012987012987
6.987012987012987 x 100 = 698.7%