-3.81% is the change from 577 to 555
Calculation steps:
[( 555 - 577 ) ÷ 577] x 100 = -3.81%
Formula
Percentage change = [(555 - 577) / 577] x 100
Subtract the new number by the original number
555 - 577 = -22
-22 ÷ 577 = -0.038128249566724434
-0.038128249566724434 x 100 = -3.81%