-32.58% is the change from 623 to 420
Calculation steps:
[( 420 - 623 ) ÷ 623] x 100 = -32.58%
Formula
Percentage change = [(420 - 623) / 623] x 100
Subtract the new number by the original number
420 - 623 = -203
-203 ÷ 623 = -0.3258426966292135
-0.3258426966292135 x 100 = -32.58%