-6.35% is the change from 457 to 428
Calculation steps:
[( 428 - 457 ) ÷ 457] x 100 = -6.35%
Formula
Percentage change = [(428 - 457) / 457] x 100
Subtract the new number by the original number
428 - 457 = -29
-29 ÷ 457 = -0.06345733041575492
-0.06345733041575492 x 100 = -6.35%