-90.86% is the change from 919 to 84
Calculation steps:
[( 84 - 919 ) ÷ 919] x 100 = -90.86%
Formula
Percentage change = [(84 - 919) / 919] x 100
Subtract the new number by the original number
84 - 919 = -835
-835 ÷ 919 = -0.9085963003264418
-0.9085963003264418 x 100 = -90.86%