-20.22% is the change from 623 to 497
Calculation steps:
[( 497 - 623 ) ÷ 623] x 100 = -20.22%
Formula
Percentage change = [(497 - 623) / 623] x 100
Subtract the new number by the original number
497 - 623 = -126
-126 ÷ 623 = -0.20224719101123595
-0.20224719101123595 x 100 = -20.22%