-3.57% is the change from 812 to 783
Calculation steps:
[( 783 - 812 ) ÷ 812] x 100 = -3.57%
Formula
Percentage change = [(783 - 812) / 812] x 100
Subtract the new number by the original number
783 - 812 = -29
-29 ÷ 812 = -0.03571428571428571
-0.03571428571428571 x 100 = -3.57%