-31.65% is the change from 455 to 311
Calculation steps:
[( 311 - 455 ) ÷ 455] x 100 = -31.65%
Formula
Percentage change = [(311 - 455) / 455] x 100
Subtract the new number by the original number
311 - 455 = -144
-144 ÷ 455 = -0.31648351648351647
-0.31648351648351647 x 100 = -31.65%