-29.8% is the change from 406 to 285
Calculation steps:
[( 285 - 406 ) ÷ 406] x 100 = -29.8%
Formula
Percentage change = [(285 - 406) / 406] x 100
Subtract the new number by the original number
285 - 406 = -121
-121 ÷ 406 = -0.29802955665024633
-0.29802955665024633 x 100 = -29.8%