-86.99% is the change from 930 to 121
Calculation steps:
[( 121 - 930 ) ÷ 930] x 100 = -86.99%
Formula
Percentage change = [(121 - 930) / 930] x 100
Subtract the new number by the original number
121 - 930 = -809
-809 ÷ 930 = -0.8698924731182796
-0.8698924731182796 x 100 = -86.99%