-54.19% is the change from 919 to 421
Calculation steps:
[( 421 - 919 ) ÷ 919] x 100 = -54.19%
Formula
Percentage change = [(421 - 919) / 919] x 100
Subtract the new number by the original number
421 - 919 = -498
-498 ÷ 919 = -0.5418933623503809
-0.5418933623503809 x 100 = -54.19%