-99.71% is the change from 679 to 2
Calculation steps:
[( 2 - 679 ) ÷ 679] x 100 = -99.71%
Formula
Percentage change = [(2 - 679) / 679] x 100
Subtract the new number by the original number
2 - 679 = -677
-677 ÷ 679 = -0.9970544918998527
-0.9970544918998527 x 100 = -99.71%