-65.47% is the change from 501 to 173
Calculation steps:
[( 173 - 501 ) ÷ 501] x 100 = -65.47%
Formula
Percentage change = [(173 - 501) / 501] x 100
Subtract the new number by the original number
173 - 501 = -328
-328 ÷ 501 = -0.654690618762475
-0.654690618762475 x 100 = -65.47%