-85.01% is the change from 807 to 121
Calculation steps:
[( 121 - 807 ) ÷ 807] x 100 = -85.01%
Formula
Percentage change = [(121 - 807) / 807] x 100
Subtract the new number by the original number
121 - 807 = -686
-686 ÷ 807 = -0.8500619578686494
-0.8500619578686494 x 100 = -85.01%