-6.56% is the change from 457 to 427
Calculation steps:
[( 427 - 457 ) ÷ 457] x 100 = -6.56%
Formula
Percentage change = [(427 - 457) / 457] x 100
Subtract the new number by the original number
427 - 457 = -30
-30 ÷ 457 = -0.06564551422319474
-0.06564551422319474 x 100 = -6.56%