-90.64% is the change from 919 to 86
Calculation steps:
[( 86 - 919 ) ÷ 919] x 100 = -90.64%
Formula
Percentage change = [(86 - 919) / 919] x 100
Subtract the new number by the original number
86 - 919 = -833
-833 ÷ 919 = -0.9064200217627857
-0.9064200217627857 x 100 = -90.64%