-18.18% is the change from 891 to 729
Calculation steps:
[( 729 - 891 ) ÷ 891] x 100 = -18.18%
Formula
Percentage change = [(729 - 891) / 891] x 100
Subtract the new number by the original number
729 - 891 = -162
-162 ÷ 891 = -0.18181818181818182
-0.18181818181818182 x 100 = -18.18%