-46.11% is the change from 321 to 173
Calculation steps:
[( 173 - 321 ) ÷ 321] x 100 = -46.11%
Formula
Percentage change = [(173 - 321) / 321] x 100
Subtract the new number by the original number
173 - 321 = -148
-148 ÷ 321 = -0.46105919003115264
-0.46105919003115264 x 100 = -46.11%