-97.97% is the change from 739 to 15
Calculation steps:
[( 15 - 739 ) ÷ 739] x 100 = -97.97%
Formula
Percentage change = [(15 - 739) / 739] x 100
Subtract the new number by the original number
15 - 739 = -724
-724 ÷ 739 = -0.979702300405954
-0.979702300405954 x 100 = -97.97%