-2.31% is the change from 867 to 847
Calculation steps:
[( 847 - 867 ) ÷ 867] x 100 = -2.31%
Formula
Percentage change = [(847 - 867) / 867] x 100
Subtract the new number by the original number
847 - 867 = -20
-20 ÷ 867 = -0.02306805074971165
-0.02306805074971165 x 100 = -2.31%