-32.94% is the change from 428 to 287
Calculation steps:
[( 287 - 428 ) ÷ 428] x 100 = -32.94%
Formula
Percentage change = [(287 - 428) / 428] x 100
Subtract the new number by the original number
287 - 428 = -141
-141 ÷ 428 = -0.3294392523364486
-0.3294392523364486 x 100 = -32.94%