-0.71% is the change from 423 to 420
Calculation steps:
[( 420 - 423 ) ÷ 423] x 100 = -0.71%
Formula
Percentage change = [(420 - 423) / 423] x 100
Subtract the new number by the original number
420 - 423 = -3
-3 ÷ 423 = -0.0070921985815602835
-0.0070921985815602835 x 100 = -0.71%