-41.42% is the change from 478 to 280
Calculation steps:
[( 280 - 478 ) ÷ 478] x 100 = -41.42%
Formula
Percentage change = [(280 - 478) / 478] x 100
Subtract the new number by the original number
280 - 478 = -198
-198 ÷ 478 = -0.41422594142259417
-0.41422594142259417 x 100 = -41.42%