-3.68% is the change from 897 to 864
Calculation steps:
[( 864 - 897 ) ÷ 897] x 100 = -3.68%
Formula
Percentage change = [(864 - 897) / 897] x 100
Subtract the new number by the original number
864 - 897 = -33
-33 ÷ 897 = -0.03678929765886288
-0.03678929765886288 x 100 = -3.68%