-95.88% is the change from 170 to 7
Calculation steps:
[( 7 - 170 ) ÷ 170] x 100 = -95.88%
Formula
Percentage change = [(7 - 170) / 170] x 100
Subtract the new number by the original number
7 - 170 = -163
-163 ÷ 170 = -0.9588235294117647
-0.9588235294117647 x 100 = -95.88%