-96.99% is the change from 697 to 21
Calculation steps:
[( 21 - 697 ) ÷ 697] x 100 = -96.99%
Formula
Percentage change = [(21 - 697) / 697] x 100
Subtract the new number by the original number
21 - 697 = -676
-676 ÷ 697 = -0.96987087517934
-0.96987087517934 x 100 = -96.99%