-4.62% is the change from 455 to 434
Calculation steps:
[( 434 - 455 ) ÷ 455] x 100 = -4.62%
Formula
Percentage change = [(434 - 455) / 455] x 100
Subtract the new number by the original number
434 - 455 = -21
-21 ÷ 455 = -0.046153846153846156
-0.046153846153846156 x 100 = -4.62%