-20.43% is the change from 646 to 514
Calculation steps:
[( 514 - 646 ) ÷ 646] x 100 = -20.43%
Formula
Percentage change = [(514 - 646) / 646] x 100
Subtract the new number by the original number
514 - 646 = -132
-132 ÷ 646 = -0.2043343653250774
-0.2043343653250774 x 100 = -20.43%