-90.75% is the change from 919 to 85
Calculation steps:
[( 85 - 919 ) ÷ 919] x 100 = -90.75%
Formula
Percentage change = [(85 - 919) / 919] x 100
Subtract the new number by the original number
85 - 919 = -834
-834 ÷ 919 = -0.9075081610446137
-0.9075081610446137 x 100 = -90.75%