-83.74% is the change from 123 to 20
Calculation steps:
[( 20 - 123 ) ÷ 123] x 100 = -83.74%
Formula
Percentage change = [(20 - 123) / 123] x 100
Subtract the new number by the original number
20 - 123 = -103
-103 ÷ 123 = -0.8373983739837398
-0.8373983739837398 x 100 = -83.74%