-33.18% is the change from 428 to 286
Calculation steps:
[( 286 - 428 ) ÷ 428] x 100 = -33.18%
Formula
Percentage change = [(286 - 428) / 428] x 100
Subtract the new number by the original number
286 - 428 = -142
-142 ÷ 428 = -0.3317757009345794
-0.3317757009345794 x 100 = -33.18%