-49.26% is the change from 337 to 171
Calculation steps:
[( 171 - 337 ) ÷ 337] x 100 = -49.26%
Formula
Percentage change = [(171 - 337) / 337] x 100
Subtract the new number by the original number
171 - 337 = -166
-166 ÷ 337 = -0.49258160237388726
-0.49258160237388726 x 100 = -49.26%