-79.7% is the change from 606 to 123
Calculation steps:
[( 123 - 606 ) ÷ 606] x 100 = -79.7%
Formula
Percentage change = [(123 - 606) / 606] x 100
Subtract the new number by the original number
123 - 606 = -483
-483 ÷ 606 = -0.7970297029702971
-0.7970297029702971 x 100 = -79.7%