-56.47% is the change from 170 to 74
Calculation steps:
[( 74 - 170 ) ÷ 170] x 100 = -56.47%
Formula
Percentage change = [(74 - 170) / 170] x 100
Subtract the new number by the original number
74 - 170 = -96
-96 ÷ 170 = -0.5647058823529412
-0.5647058823529412 x 100 = -56.47%