-20.06% is the change from 643 to 514
Calculation steps:
[( 514 - 643 ) ÷ 643] x 100 = -20.06%
Formula
Percentage change = [(514 - 643) / 643] x 100
Subtract the new number by the original number
514 - 643 = -129
-129 ÷ 643 = -0.2006220839813375
-0.2006220839813375 x 100 = -20.06%