-90.87% is the change from 920 to 84
Calculation steps:
[( 84 - 920 ) ÷ 920] x 100 = -90.87%
Formula
Percentage change = [(84 - 920) / 920] x 100
Subtract the new number by the original number
84 - 920 = -836
-836 ÷ 920 = -0.908695652173913
-0.908695652173913 x 100 = -90.87%