-64.69% is the change from 490 to 173
Calculation steps:
[( 173 - 490 ) ÷ 490] x 100 = -64.69%
Formula
Percentage change = [(173 - 490) / 490] x 100
Subtract the new number by the original number
173 - 490 = -317
-317 ÷ 490 = -0.6469387755102041
-0.6469387755102041 x 100 = -64.69%