-20.59% is the change from 34 to 27
Calculation steps:
[( 27 - 34 ) ÷ 34] x 100 = -20.59%
Formula
Percentage change = [(27 - 34) / 34] x 100
Subtract the new number by the original number
27 - 34 = -7
-7 ÷ 34 = -0.20588235294117646
-0.20588235294117646 x 100 = -20.59%