-96.47% is the change from 680 to 24
Calculation steps:
[( 24 - 680 ) ÷ 680] x 100 = -96.47%
Formula
Percentage change = [(24 - 680) / 680] x 100
Subtract the new number by the original number
24 - 680 = -656
-656 ÷ 680 = -0.9647058823529412
-0.9647058823529412 x 100 = -96.47%