-24.96% is the change from 681 to 511
Calculation steps:
[( 511 - 681 ) ÷ 681] x 100 = -24.96%
Formula
Percentage change = [(511 - 681) / 681] x 100
Subtract the new number by the original number
511 - 681 = -170
-170 ÷ 681 = -0.24963289280469897
-0.24963289280469897 x 100 = -24.96%