-98.66% is the change from 674 to 9
Calculation steps:
[( 9 - 674 ) ÷ 674] x 100 = -98.66%
Formula
Percentage change = [(9 - 674) / 674] x 100
Subtract the new number by the original number
9 - 674 = -665
-665 ÷ 674 = -0.9866468842729971
-0.9866468842729971 x 100 = -98.66%