-50.6% is the change from 919 to 454
Calculation steps:
[( 454 - 919 ) ÷ 919] x 100 = -50.6%
Formula
Percentage change = [(454 - 919) / 919] x 100
Subtract the new number by the original number
454 - 919 = -465
-465 ÷ 919 = -0.5059847660500544
-0.5059847660500544 x 100 = -50.6%