-38.94% is the change from 909 to 555
Calculation steps:
[( 555 - 909 ) ÷ 909] x 100 = -38.94%
Formula
Percentage change = [(555 - 909) / 909] x 100
Subtract the new number by the original number
555 - 909 = -354
-354 ÷ 909 = -0.38943894389438943
-0.38943894389438943 x 100 = -38.94%