-34.97% is the change from 855 to 556
Calculation steps:
[( 556 - 855 ) ÷ 855] x 100 = -34.97%
Formula
Percentage change = [(556 - 855) / 855] x 100
Subtract the new number by the original number
556 - 855 = -299
-299 ÷ 855 = -0.3497076023391813
-0.3497076023391813 x 100 = -34.97%