-1.48% is the change from 812 to 800
Calculation steps:
[( 800 - 812 ) ÷ 812] x 100 = -1.48%
Formula
Percentage change = [(800 - 812) / 812] x 100
Subtract the new number by the original number
800 - 812 = -12
-12 ÷ 812 = -0.014778325123152709
-0.014778325123152709 x 100 = -1.48%