-68.47% is the change from 406 to 128
Calculation steps:
[( 128 - 406 ) ÷ 406] x 100 = -68.47%
Formula
Percentage change = [(128 - 406) / 406] x 100
Subtract the new number by the original number
128 - 406 = -278
-278 ÷ 406 = -0.6847290640394089
-0.6847290640394089 x 100 = -68.47%