-49.26% is the change from 339 to 172
Calculation steps:
[( 172 - 339 ) ÷ 339] x 100 = -49.26%
Formula
Percentage change = [(172 - 339) / 339] x 100
Subtract the new number by the original number
172 - 339 = -167
-167 ÷ 339 = -0.49262536873156343
-0.49262536873156343 x 100 = -49.26%