-8.7% is the change from 897 to 819
Calculation steps:
[( 819 - 897 ) ÷ 897] x 100 = -8.7%
Formula
Percentage change = [(819 - 897) / 897] x 100
Subtract the new number by the original number
819 - 897 = -78
-78 ÷ 897 = -0.08695652173913043
-0.08695652173913043 x 100 = -8.7%