-79.29% is the change from 623 to 129
Calculation steps:
[( 129 - 623 ) ÷ 623] x 100 = -79.29%
Formula
Percentage change = [(129 - 623) / 623] x 100
Subtract the new number by the original number
129 - 623 = -494
-494 ÷ 623 = -0.7929373996789727
-0.7929373996789727 x 100 = -79.29%