-21.99% is the change from 623 to 486
Calculation steps:
[( 486 - 623 ) ÷ 623] x 100 = -21.99%
Formula
Percentage change = [(486 - 623) / 623] x 100
Subtract the new number by the original number
486 - 623 = -137
-137 ÷ 623 = -0.21990369181380418
-0.21990369181380418 x 100 = -21.99%