-13.41% is the change from 82 to 71
Calculation steps:
[( 71 - 82 ) ÷ 82] x 100 = -13.41%
Formula
Percentage change = [(71 - 82) / 82] x 100
Subtract the new number by the original number
71 - 82 = -11
-11 ÷ 82 = -0.13414634146341464
-0.13414634146341464 x 100 = -13.41%