-94.26% is the change from 679 to 39
Calculation steps:
[( 39 - 679 ) ÷ 679] x 100 = -94.26%
Formula
Percentage change = [(39 - 679) / 679] x 100
Subtract the new number by the original number
39 - 679 = -640
-640 ÷ 679 = -0.9425625920471281
-0.9425625920471281 x 100 = -94.26%