-6.15% is the change from 455 to 427
Calculation steps:
[( 427 - 455 ) ÷ 455] x 100 = -6.15%
Formula
Percentage change = [(427 - 455) / 455] x 100
Subtract the new number by the original number
427 - 455 = -28
-28 ÷ 455 = -0.06153846153846154
-0.06153846153846154 x 100 = -6.15%