-89.12% is the change from 919 to 100
Calculation steps:
[( 100 - 919 ) ÷ 919] x 100 = -89.12%
Formula
Percentage change = [(100 - 919) / 919] x 100
Subtract the new number by the original number
100 - 919 = -819
-819 ÷ 919 = -0.8911860718171926
-0.8911860718171926 x 100 = -89.12%