-48.57% is the change from 455 to 234
Calculation steps:
[( 234 - 455 ) ÷ 455] x 100 = -48.57%
Formula
Percentage change = [(234 - 455) / 455] x 100
Subtract the new number by the original number
234 - 455 = -221
-221 ÷ 455 = -0.4857142857142857
-0.4857142857142857 x 100 = -48.57%