-28.87% is the change from 897 to 638
Calculation steps:
[( 638 - 897 ) ÷ 897] x 100 = -28.87%
Formula
Percentage change = [(638 - 897) / 897] x 100
Subtract the new number by the original number
638 - 897 = -259
-259 ÷ 897 = -0.2887402452619844
-0.2887402452619844 x 100 = -28.87%