-0.8% is the change from 125 to 124
Calculation steps:
[( 124 - 125 ) ÷ 125] x 100 = -0.8%
Formula
Percentage change = [(124 - 125) / 125] x 100
Subtract the new number by the original number
124 - 125 = -1
-1 ÷ 125 = -0.008
-0.008 x 100 = -0.8%
Example