-6.25% is the change from 912 to 855
Calculation steps:
[( 855 - 912 ) ÷ 912] x 100 = -6.25%
Formula
Percentage change = [(855 - 912) / 912] x 100
Subtract the new number by the original number
855 - 912 = -57
-57 ÷ 912 = -0.0625
-0.0625 x 100 = -6.25%