-8% is the change from 838 to 771
Calculation steps:
[( 771 - 838 ) ÷ 838] x 100 = -8%
Formula
Percentage change = [(771 - 838) / 838] x 100
Subtract the new number by the original number
771 - 838 = -67
-67 ÷ 838 = -0.07995226730310262
-0.07995226730310262 x 100 = -8%