-20.12% is the change from 646 to 516
Calculation steps:
[( 516 - 646 ) ÷ 646] x 100 = -20.12%
Formula
Percentage change = [(516 - 646) / 646] x 100
Subtract the new number by the original number
516 - 646 = -130
-130 ÷ 646 = -0.20123839009287925
-0.20123839009287925 x 100 = -20.12%