-54.07% is the change from 455 to 209
Calculation steps:
[( 209 - 455 ) ÷ 455] x 100 = -54.07%
Formula
Percentage change = [(209 - 455) / 455] x 100
Subtract the new number by the original number
209 - 455 = -246
-246 ÷ 455 = -0.5406593406593406
-0.5406593406593406 x 100 = -54.07%