-98.97% is the change from 677 to 7
Calculation steps:
[( 7 - 677 ) ÷ 677] x 100 = -98.97%
Formula
Percentage change = [(7 - 677) / 677] x 100
Subtract the new number by the original number
7 - 677 = -670
-670 ÷ 677 = -0.9896602658788775
-0.9896602658788775 x 100 = -98.97%