-99.29% is the change from 423 to 3
Calculation steps:
[( 3 - 423 ) ÷ 423] x 100 = -99.29%
Formula
Percentage change = [(3 - 423) / 423] x 100
Subtract the new number by the original number
3 - 423 = -420
-420 ÷ 423 = -0.9929078014184397
-0.9929078014184397 x 100 = -99.29%