-11.76% is the change from 34 to 30
Calculation steps:
[( 30 - 34 ) ÷ 34] x 100 = -11.76%
Formula
Percentage change = [(30 - 34) / 34] x 100
Subtract the new number by the original number
30 - 34 = -4
-4 ÷ 34 = -0.11764705882352941
-0.11764705882352941 x 100 = -11.76%