-52.17% is the change from 23 to 11
Calculation steps:
[( 11 - 23 ) ÷ 23] x 100 = -52.17%
Formula
Percentage change = [(11 - 23) / 23] x 100
Subtract the new number by the original number
11 - 23 = -12
-12 ÷ 23 = -0.5217391304347826
-0.5217391304347826 x 100 = -52.17%