-62.4% is the change from 641 to 241
Calculation steps:
[( 241 - 641 ) ÷ 641] x 100 = -62.4%
Formula
Percentage change = [(241 - 641) / 641] x 100
Subtract the new number by the original number
241 - 641 = -400
-400 ÷ 641 = -0.62402496099844
-0.62402496099844 x 100 = -62.4%