-16.99% is the change from 830 to 689
Calculation steps:
[( 689 - 830 ) ÷ 830] x 100 = -16.99%
Formula
Percentage change = [(689 - 830) / 830] x 100
Subtract the new number by the original number
689 - 830 = -141
-141 ÷ 830 = -0.16987951807228915
-0.16987951807228915 x 100 = -16.99%