-34.39% is the change from 855 to 561
Calculation steps:
[( 561 - 855 ) ÷ 855] x 100 = -34.39%
Formula
Percentage change = [(561 - 855) / 855] x 100
Subtract the new number by the original number
561 - 855 = -294
-294 ÷ 855 = -0.34385964912280703
-0.34385964912280703 x 100 = -34.39%