-6.71% is the change from 864 to 806
Calculation steps:
[( 806 - 864 ) ÷ 864] x 100 = -6.71%
Formula
Percentage change = [(806 - 864) / 864] x 100
Subtract the new number by the original number
806 - 864 = -58
-58 ÷ 864 = -0.06712962962962964
-0.06712962962962964 x 100 = -6.71%