-56.52% is the change from 897 to 390
Calculation steps:
[( 390 - 897 ) ÷ 897] x 100 = -56.52%
Formula
Percentage change = [(390 - 897) / 897] x 100
Subtract the new number by the original number
390 - 897 = -507
-507 ÷ 897 = -0.5652173913043478
-0.5652173913043478 x 100 = -56.52%