-24.67% is the change from 677 to 510
Calculation steps:
[( 510 - 677 ) ÷ 677] x 100 = -24.67%
Formula
Percentage change = [(510 - 677) / 677] x 100
Subtract the new number by the original number
510 - 677 = -167
-167 ÷ 677 = -0.2466765140324963
-0.2466765140324963 x 100 = -24.67%