-45.7% is the change from 838 to 455
Calculation steps:
[( 455 - 838 ) ÷ 838] x 100 = -45.7%
Formula
Percentage change = [(455 - 838) / 838] x 100
Subtract the new number by the original number
455 - 838 = -383
-383 ÷ 838 = -0.45704057279236276
-0.45704057279236276 x 100 = -45.7%