-97.97% is the change from 837 to 17
Calculation steps:
[( 17 - 837 ) ÷ 837] x 100 = -97.97%
Formula
Percentage change = [(17 - 837) / 837] x 100
Subtract the new number by the original number
17 - 837 = -820
-820 ÷ 837 = -0.9796893667861409
-0.9796893667861409 x 100 = -97.97%