-15.46% is the change from 815 to 689
Calculation steps:
[( 689 - 815 ) ÷ 815] x 100 = -15.46%
Formula
Percentage change = [(689 - 815) / 815] x 100
Subtract the new number by the original number
689 - 815 = -126
-126 ÷ 815 = -0.15460122699386503
-0.15460122699386503 x 100 = -15.46%