-90.18% is the change from 876 to 86
Calculation steps:
[( 86 - 876 ) ÷ 876] x 100 = -90.18%
Formula
Percentage change = [(86 - 876) / 876] x 100
Subtract the new number by the original number
86 - 876 = -790
-790 ÷ 876 = -0.9018264840182648
-0.9018264840182648 x 100 = -90.18%