-1.82% is the change from 880 to 864
Calculation steps:
[( 864 - 880 ) ÷ 880] x 100 = -1.82%
Formula
Percentage change = [(864 - 880) / 880] x 100
Subtract the new number by the original number
864 - 880 = -16
-16 ÷ 880 = -0.01818181818181818
-0.01818181818181818 x 100 = -1.82%