-6.14% is the change from 456 to 428
Calculation steps:
[( 428 - 456 ) ÷ 456] x 100 = -6.14%
Formula
Percentage change = [(428 - 456) / 456] x 100
Subtract the new number by the original number
428 - 456 = -28
-28 ÷ 456 = -0.06140350877192982
-0.06140350877192982 x 100 = -6.14%