-89.43% is the change from 814 to 86
Calculation steps:
[( 86 - 814 ) ÷ 814] x 100 = -89.43%
Formula
Percentage change = [(86 - 814) / 814] x 100
Subtract the new number by the original number
86 - 814 = -728
-728 ÷ 814 = -0.8943488943488943
-0.8943488943488943 x 100 = -89.43%