-1.01% is the change from 889 to 880
Calculation steps:
[( 880 - 889 ) ÷ 889] x 100 = -1.01%
Formula
Percentage change = [(880 - 889) / 889] x 100
Subtract the new number by the original number
880 - 889 = -9
-9 ÷ 889 = -0.010123734533183352
-0.010123734533183352 x 100 = -1.01%