-99.02% is the change from 919 to 9
Calculation steps:
[( 9 - 919 ) ÷ 919] x 100 = -99.02%
Formula
Percentage change = [(9 - 919) / 919] x 100
Subtract the new number by the original number
9 - 919 = -910
-910 ÷ 919 = -0.9902067464635473
-0.9902067464635473 x 100 = -99.02%