-17.78% is the change from 838 to 689
Calculation steps:
[( 689 - 838 ) ÷ 838] x 100 = -17.78%
Formula
Percentage change = [(689 - 838) / 838] x 100
Subtract the new number by the original number
689 - 838 = -149
-149 ÷ 838 = -0.17780429594272076
-0.17780429594272076 x 100 = -17.78%