-97.09% is the change from 722 to 21
Calculation steps:
[( 21 - 722 ) ÷ 722] x 100 = -97.09%
Formula
Percentage change = [(21 - 722) / 722] x 100
Subtract the new number by the original number
21 - 722 = -701
-701 ÷ 722 = -0.9709141274238227
-0.9709141274238227 x 100 = -97.09%