-85.37% is the change from 123 to 18
Calculation steps:
[( 18 - 123 ) ÷ 123] x 100 = -85.37%
Formula
Percentage change = [(18 - 123) / 123] x 100
Subtract the new number by the original number
18 - 123 = -105
-105 ÷ 123 = -0.8536585365853658
-0.8536585365853658 x 100 = -85.37%