-4.42% is the change from 837 to 800
Calculation steps:
[( 800 - 837 ) ÷ 837] x 100 = -4.42%
Formula
Percentage change = [(800 - 837) / 837] x 100
Subtract the new number by the original number
800 - 837 = -37
-37 ÷ 837 = -0.04420549581839905
-0.04420549581839905 x 100 = -4.42%