-33.87% is the change from 431 to 285
Calculation steps:
[( 285 - 431 ) ÷ 431] x 100 = -33.87%
Formula
Percentage change = [(285 - 431) / 431] x 100
Subtract the new number by the original number
285 - 431 = -146
-146 ÷ 431 = -0.33874709976798145
-0.33874709976798145 x 100 = -33.87%