-79.69% is the change from 837 to 170
Calculation steps:
[( 170 - 837 ) ÷ 837] x 100 = -79.69%
Formula
Percentage change = [(170 - 837) / 837] x 100
Subtract the new number by the original number
170 - 837 = -667
-667 ÷ 837 = -0.7968936678614098
-0.7968936678614098 x 100 = -79.69%