-89.25% is the change from 930 to 100
Calculation steps:
[( 100 - 930 ) ÷ 930] x 100 = -89.25%
Formula
Percentage change = [(100 - 930) / 930] x 100
Subtract the new number by the original number
100 - 930 = -830
-830 ÷ 930 = -0.8924731182795699
-0.8924731182795699 x 100 = -89.25%