-90.09% is the change from 111 to 11
Calculation steps:
[( 11 - 111 ) ÷ 111] x 100 = -90.09%
Formula
Percentage change = [(11 - 111) / 111] x 100
Subtract the new number by the original number
11 - 111 = -100
-100 ÷ 111 = -0.9009009009009009
-0.9009009009009009 x 100 = -90.09%