-20.22% is the change from 643 to 513
Calculation steps:
[( 513 - 643 ) ÷ 643] x 100 = -20.22%
Formula
Percentage change = [(513 - 643) / 643] x 100
Subtract the new number by the original number
513 - 643 = -130
-130 ÷ 643 = -0.20217729393468117
-0.20217729393468117 x 100 = -20.22%