-46.03% is the change from 428 to 231
Calculation steps:
[( 231 - 428 ) ÷ 428] x 100 = -46.03%
Formula
Percentage change = [(231 - 428) / 428] x 100
Subtract the new number by the original number
231 - 428 = -197
-197 ÷ 428 = -0.4602803738317757
-0.4602803738317757 x 100 = -46.03%