-79.41% is the change from 34 to 7
Calculation steps:
[( 7 - 34 ) ÷ 34] x 100 = -79.41%
Formula
Percentage change = [(7 - 34) / 34] x 100
Subtract the new number by the original number
7 - 34 = -27
-27 ÷ 34 = -0.7941176470588235
-0.7941176470588235 x 100 = -79.41%