-70.59% is the change from 68 to 20
Calculation steps:
[( 20 - 68 ) ÷ 68] x 100 = -70.59%
Formula
Percentage change = [(20 - 68) / 68] x 100
Subtract the new number by the original number
20 - 68 = -48
-48 ÷ 68 = -0.7058823529411765
-0.7058823529411765 x 100 = -70.59%