-79.45% is the change from 623 to 128
Calculation steps:
[( 128 - 623 ) ÷ 623] x 100 = -79.45%
Formula
Percentage change = [(128 - 623) / 623] x 100
Subtract the new number by the original number
128 - 623 = -495
-495 ÷ 623 = -0.7945425361155698
-0.7945425361155698 x 100 = -79.45%