-2.2% is the change from 864 to 845
Calculation steps:
[( 845 - 864 ) ÷ 864] x 100 = -2.2%
Formula
Percentage change = [(845 - 864) / 864] x 100
Subtract the new number by the original number
845 - 864 = -19
-19 ÷ 864 = -0.02199074074074074
-0.02199074074074074 x 100 = -2.2%