-77.69% is the change from 623 to 139
Calculation steps:
[( 139 - 623 ) ÷ 623] x 100 = -77.69%
Formula
Percentage change = [(139 - 623) / 623] x 100
Subtract the new number by the original number
139 - 623 = -484
-484 ÷ 623 = -0.7768860353130016
-0.7768860353130016 x 100 = -77.69%