-97.98% is the change from 743 to 15
Calculation steps:
[( 15 - 743 ) ÷ 743] x 100 = -97.98%
Formula
Percentage change = [(15 - 743) / 743] x 100
Subtract the new number by the original number
15 - 743 = -728
-728 ÷ 743 = -0.9798115746971736
-0.9798115746971736 x 100 = -97.98%