-28.99% is the change from 897 to 637
Calculation steps:
[( 637 - 897 ) ÷ 897] x 100 = -28.99%
Formula
Percentage change = [(637 - 897) / 897] x 100
Subtract the new number by the original number
637 - 897 = -260
-260 ÷ 897 = -0.2898550724637681
-0.2898550724637681 x 100 = -28.99%