-24.96% is the change from 677 to 508
Calculation steps:
[( 508 - 677 ) ÷ 677] x 100 = -24.96%
Formula
Percentage change = [(508 - 677) / 677] x 100
Subtract the new number by the original number
508 - 677 = -169
-169 ÷ 677 = -0.24963072378138848
-0.24963072378138848 x 100 = -24.96%