-21.51% is the change from 623 to 489
Calculation steps:
[( 489 - 623 ) ÷ 623] x 100 = -21.51%
Formula
Percentage change = [(489 - 623) / 623] x 100
Subtract the new number by the original number
489 - 623 = -134
-134 ÷ 623 = -0.21508828250401285
-0.21508828250401285 x 100 = -21.51%