-0.26% is the change from 389 to 388
Calculation steps:
[( 388 - 389 ) ÷ 389] x 100 = -0.26%
Formula
Percentage change = [(388 - 389) / 389] x 100
Subtract the new number by the original number
388 - 389 = -1
-1 ÷ 389 = -0.002570694087403599
-0.002570694087403599 x 100 = -0.26%