-4.53% is the change from 838 to 800
Calculation steps:
[( 800 - 838 ) ÷ 838] x 100 = -4.53%
Formula
Percentage change = [(800 - 838) / 838] x 100
Subtract the new number by the original number
800 - 838 = -38
-38 ÷ 838 = -0.045346062052505964
-0.045346062052505964 x 100 = -4.53%