-17.07% is the change from 82 to 68
Calculation steps:
[( 68 - 82 ) ÷ 82] x 100 = -17.07%
Formula
Percentage change = [(68 - 82) / 82] x 100
Subtract the new number by the original number
68 - 82 = -14
-14 ÷ 82 = -0.17073170731707318
-0.17073170731707318 x 100 = -17.07%