-5.88% is the change from 68 to 64
Calculation steps:
[( 64 - 68 ) ÷ 68] x 100 = -5.88%
Formula
Percentage change = [(64 - 68) / 68] x 100
Subtract the new number by the original number
64 - 68 = -4
-4 ÷ 68 = -0.058823529411764705
-0.058823529411764705 x 100 = -5.88%