-90.32% is the change from 919 to 89
Calculation steps:
[( 89 - 919 ) ÷ 919] x 100 = -90.32%
Formula
Percentage change = [(89 - 919) / 919] x 100
Subtract the new number by the original number
89 - 919 = -830
-830 ÷ 919 = -0.9031556039173014
-0.9031556039173014 x 100 = -90.32%