-6.9% is the change from 928 to 864
Calculation steps:
[( 864 - 928 ) ÷ 928] x 100 = -6.9%
Formula
Percentage change = [(864 - 928) / 928] x 100
Subtract the new number by the original number
864 - 928 = -64
-64 ÷ 928 = -0.06896551724137931
-0.06896551724137931 x 100 = -6.9%