-51.72% is the change from 145 to 70
Calculation steps:
[( 70 - 145 ) ÷ 145] x 100 = -51.72%
Formula
Percentage change = [(70 - 145) / 145] x 100
Subtract the new number by the original number
70 - 145 = -75
-75 ÷ 145 = -0.5172413793103449
-0.5172413793103449 x 100 = -51.72%