-4.29% is the change from 70 to 67
Calculation steps:
[( 67 - 70 ) ÷ 70] x 100 = -4.29%
Formula
Percentage change = [(67 - 70) / 70] x 100
Subtract the new number by the original number
67 - 70 = -3
-3 ÷ 70 = -0.04285714285714286
-0.04285714285714286 x 100 = -4.29%