-84.55% is the change from 123 to 19
Calculation steps:
[( 19 - 123 ) ÷ 123] x 100 = -84.55%
Formula
Percentage change = [(19 - 123) / 123] x 100
Subtract the new number by the original number
19 - 123 = -104
-104 ÷ 123 = -0.8455284552845529
-0.8455284552845529 x 100 = -84.55%