-64.71% is the change from 170 to 60
Calculation steps:
[( 60 - 170 ) ÷ 170] x 100 = -64.71%
Formula
Percentage change = [(60 - 170) / 170] x 100
Subtract the new number by the original number
60 - 170 = -110
-110 ÷ 170 = -0.6470588235294118
-0.6470588235294118 x 100 = -64.71%