-68.24% is the change from 340 to 108
Calculation steps:
[( 108 - 340 ) ÷ 340] x 100 = -68.24%
Formula
Percentage change = [(108 - 340) / 340] x 100
Subtract the new number by the original number
108 - 340 = -232
-232 ÷ 340 = -0.6823529411764706
-0.6823529411764706 x 100 = -68.24%