-65.91% is the change from 836 to 285
Calculation steps:
[( 285 - 836 ) ÷ 836] x 100 = -65.91%
Formula
Percentage change = [(285 - 836) / 836] x 100
Subtract the new number by the original number
285 - 836 = -551
-551 ÷ 836 = -0.6590909090909091
-0.6590909090909091 x 100 = -65.91%