-90.24% is the change from 123 to 12
Calculation steps:
[( 12 - 123 ) ÷ 123] x 100 = -90.24%
Formula
Percentage change = [(12 - 123) / 123] x 100
Subtract the new number by the original number
12 - 123 = -111
-111 ÷ 123 = -0.9024390243902439
-0.9024390243902439 x 100 = -90.24%