-0.34% is the change from 891 to 888
Calculation steps:
[( 888 - 891 ) ÷ 891] x 100 = -0.34%
Formula
Percentage change = [(888 - 891) / 891] x 100
Subtract the new number by the original number
888 - 891 = -3
-3 ÷ 891 = -0.003367003367003367
-0.003367003367003367 x 100 = -0.34%