-90.63% is the change from 918 to 86
Calculation steps:
[( 86 - 918 ) ÷ 918] x 100 = -90.63%
Formula
Percentage change = [(86 - 918) / 918] x 100
Subtract the new number by the original number
86 - 918 = -832
-832 ÷ 918 = -0.906318082788671
-0.906318082788671 x 100 = -90.63%