-68.7% is the change from 393 to 123
Calculation steps:
[( 123 - 393 ) ÷ 393] x 100 = -68.7%
Formula
Percentage change = [(123 - 393) / 393] x 100
Subtract the new number by the original number
123 - 393 = -270
-270 ÷ 393 = -0.6870229007633588
-0.6870229007633588 x 100 = -68.7%