-63.87% is the change from 501 to 181
Calculation steps:
[( 181 - 501 ) ÷ 501] x 100 = -63.87%
Formula
Percentage change = [(181 - 501) / 501] x 100
Subtract the new number by the original number
181 - 501 = -320
-320 ÷ 501 = -0.6387225548902196
-0.6387225548902196 x 100 = -63.87%