-97.69% is the change from 908 to 21
Calculation steps:
[( 21 - 908 ) ÷ 908] x 100 = -97.69%
Formula
Percentage change = [(21 - 908) / 908] x 100
Subtract the new number by the original number
21 - 908 = -887
-887 ÷ 908 = -0.9768722466960352
-0.9768722466960352 x 100 = -97.69%