-35.09% is the change from 855 to 555
Calculation steps:
[( 555 - 855 ) ÷ 855] x 100 = -35.09%
Formula
Percentage change = [(555 - 855) / 855] x 100
Subtract the new number by the original number
555 - 855 = -300
-300 ÷ 855 = -0.3508771929824561
-0.3508771929824561 x 100 = -35.09%