7344.44% is the change from 9 to 670
Calculation steps:
[( 670 - 9 ) ÷ 9] x 100 = 7344.44%
Formula
Percentage change = [(670 - 9) / 9] x 100
Subtract the new number by the original number
670 - 9 = 661
661 ÷ 9 = 73.44444444444444
73.44444444444444 x 100 = 7344.44%