-72.82% is the change from 666 to 181
Calculation steps:
[( 181 - 666 ) ÷ 666] x 100 = -72.82%
Formula
Percentage change = [(181 - 666) / 666] x 100
Subtract the new number by the original number
181 - 666 = -485
-485 ÷ 666 = -0.7282282282282282
-0.7282282282282282 x 100 = -72.82%