-9.09% is the change from 121 to 110
Calculation steps:
[( 110 - 121 ) ÷ 121] x 100 = -9.09%
Formula
Percentage change = [(110 - 121) / 121] x 100
Subtract the new number by the original number
110 - 121 = -11
-11 ÷ 121 = -0.09090909090909091
-0.09090909090909091 x 100 = -9.09%