-21.76% is the change from 455 to 356
Calculation steps:
[( 356 - 455 ) ÷ 455] x 100 = -21.76%
Formula
Percentage change = [(356 - 455) / 455] x 100
Subtract the new number by the original number
356 - 455 = -99
-99 ÷ 455 = -0.2175824175824176
-0.2175824175824176 x 100 = -21.76%