-56.41% is the change from 897 to 391
Calculation steps:
[( 391 - 897 ) ÷ 897] x 100 = -56.41%
Formula
Percentage change = [(391 - 897) / 897] x 100
Subtract the new number by the original number
391 - 897 = -506
-506 ÷ 897 = -0.5641025641025641
-0.5641025641025641 x 100 = -56.41%