-42.35% is the change from 170 to 98
Calculation steps:
[( 98 - 170 ) ÷ 170] x 100 = -42.35%
Formula
Percentage change = [(98 - 170) / 170] x 100
Subtract the new number by the original number
98 - 170 = -72
-72 ÷ 170 = -0.4235294117647059
-0.4235294117647059 x 100 = -42.35%