-54.51% is the change from 455 to 207
Calculation steps:
[( 207 - 455 ) ÷ 455] x 100 = -54.51%
Formula
Percentage change = [(207 - 455) / 455] x 100
Subtract the new number by the original number
207 - 455 = -248
-248 ÷ 455 = -0.545054945054945
-0.545054945054945 x 100 = -54.51%