-97.92% is the change from 722 to 15
Calculation steps:
[( 15 - 722 ) ÷ 722] x 100 = -97.92%
Formula
Percentage change = [(15 - 722) / 722] x 100
Subtract the new number by the original number
15 - 722 = -707
-707 ÷ 722 = -0.9792243767313019
-0.9792243767313019 x 100 = -97.92%