-1.59% is the change from 880 to 866
Calculation steps:
[( 866 - 880 ) ÷ 880] x 100 = -1.59%
Formula
Percentage change = [(866 - 880) / 880] x 100
Subtract the new number by the original number
866 - 880 = -14
-14 ÷ 880 = -0.015909090909090907
-0.015909090909090907 x 100 = -1.59%