-49.1% is the change from 334 to 170
Calculation steps:
[( 170 - 334 ) ÷ 334] x 100 = -49.1%
Formula
Percentage change = [(170 - 334) / 334] x 100
Subtract the new number by the original number
170 - 334 = -164
-164 ÷ 334 = -0.49101796407185627
-0.49101796407185627 x 100 = -49.1%