-3.89% is the change from 899 to 864
Calculation steps:
[( 864 - 899 ) ÷ 899] x 100 = -3.89%
Formula
Percentage change = [(864 - 899) / 899] x 100
Subtract the new number by the original number
864 - 899 = -35
-35 ÷ 899 = -0.0389321468298109
-0.0389321468298109 x 100 = -3.89%