-95.43% is the change from 679 to 31
Calculation steps:
[( 31 - 679 ) ÷ 679] x 100 = -95.43%
Formula
Percentage change = [(31 - 679) / 679] x 100
Subtract the new number by the original number
31 - 679 = -648
-648 ÷ 679 = -0.9543446244477173
-0.9543446244477173 x 100 = -95.43%