-97.97% is the change from 836 to 17
Calculation steps:
[( 17 - 836 ) ÷ 836] x 100 = -97.97%
Formula
Percentage change = [(17 - 836) / 836] x 100
Subtract the new number by the original number
17 - 836 = -819
-819 ÷ 836 = -0.9796650717703349
-0.9796650717703349 x 100 = -97.97%