-94.29% is the change from 70 to 4
Calculation steps:
[( 4 - 70 ) ÷ 70] x 100 = -94.29%
Formula
Percentage change = [(4 - 70) / 70] x 100
Subtract the new number by the original number
4 - 70 = -66
-66 ÷ 70 = -0.9428571428571428
-0.9428571428571428 x 100 = -94.29%