-65.21% is the change from 641 to 223
Calculation steps:
[( 223 - 641 ) ÷ 641] x 100 = -65.21%
Formula
Percentage change = [(223 - 641) / 641] x 100
Subtract the new number by the original number
223 - 641 = -418
-418 ÷ 641 = -0.6521060842433697
-0.6521060842433697 x 100 = -65.21%