-0.35% is the change from 867 to 864
Calculation steps:
[( 864 - 867 ) ÷ 867] x 100 = -0.35%
Formula
Percentage change = [(864 - 867) / 867] x 100
Subtract the new number by the original number
864 - 867 = -3
-3 ÷ 867 = -0.0034602076124567475
-0.0034602076124567475 x 100 = -0.35%