-29.31% is the change from 406 to 287
Calculation steps:
[( 287 - 406 ) ÷ 406] x 100 = -29.31%
Formula
Percentage change = [(287 - 406) / 406] x 100
Subtract the new number by the original number
287 - 406 = -119
-119 ÷ 406 = -0.29310344827586204
-0.29310344827586204 x 100 = -29.31%