-40.59% is the change from 478 to 284
Calculation steps:
[( 284 - 478 ) ÷ 478] x 100 = -40.59%
Formula
Percentage change = [(284 - 478) / 478] x 100
Subtract the new number by the original number
284 - 478 = -194
-194 ÷ 478 = -0.40585774058577406
-0.40585774058577406 x 100 = -40.59%