-17.39% is the change from 23 to 19
Calculation steps:
[( 19 - 23 ) ÷ 23] x 100 = -17.39%
Formula
Percentage change = [(19 - 23) / 23] x 100
Subtract the new number by the original number
19 - 23 = -4
-4 ÷ 23 = -0.17391304347826086
-0.17391304347826086 x 100 = -17.39%