-51.43% is the change from 350 to 170
Calculation steps:
[( 170 - 350 ) ÷ 350] x 100 = -51.43%
Formula
Percentage change = [(170 - 350) / 350] x 100
Subtract the new number by the original number
170 - 350 = -180
-180 ÷ 350 = -0.5142857142857142
-0.5142857142857142 x 100 = -51.43%