-71.76% is the change from 641 to 181
Calculation steps:
[( 181 - 641 ) ÷ 641] x 100 = -71.76%
Formula
Percentage change = [(181 - 641) / 641] x 100
Subtract the new number by the original number
181 - 641 = -460
-460 ÷ 641 = -0.717628705148206
-0.717628705148206 x 100 = -71.76%