-15.71% is the change from 70 to 59
Calculation steps:
[( 59 - 70 ) ÷ 70] x 100 = -15.71%
Formula
Percentage change = [(59 - 70) / 70] x 100
Subtract the new number by the original number
59 - 70 = -11
-11 ÷ 70 = -0.15714285714285714
-0.15714285714285714 x 100 = -15.71%