-78.68% is the change from 577 to 123
Calculation steps:
[( 123 - 577 ) ÷ 577] x 100 = -78.68%
Formula
Percentage change = [(123 - 577) / 577] x 100
Subtract the new number by the original number
123 - 577 = -454
-454 ÷ 577 = -0.7868284228769498
-0.7868284228769498 x 100 = -78.68%