-3.2% is the change from 845 to 818
Calculation steps:
[( 818 - 845 ) ÷ 845] x 100 = -3.2%
Formula
Percentage change = [(818 - 845) / 845] x 100
Subtract the new number by the original number
818 - 845 = -27
-27 ÷ 845 = -0.03195266272189349
-0.03195266272189349 x 100 = -3.2%