-0.35% is the change from 855 to 852
Calculation steps:
[( 852 - 855 ) ÷ 855] x 100 = -0.35%
Formula
Percentage change = [(852 - 855) / 855] x 100
Subtract the new number by the original number
852 - 855 = -3
-3 ÷ 855 = -0.0035087719298245615
-0.0035087719298245615 x 100 = -0.35%