7355.56% is the change from 9 to 671
Calculation steps:
[( 671 - 9 ) ÷ 9] x 100 = 7355.56%
Formula
Percentage change = [(671 - 9) / 9] x 100
Subtract the new number by the original number
671 - 9 = 662
662 ÷ 9 = 73.55555555555556
73.55555555555556 x 100 = 7355.56%