-25.11% is the change from 677 to 507
Calculation steps:
[( 507 - 677 ) ÷ 677] x 100 = -25.11%
Formula
Percentage change = [(507 - 677) / 677] x 100
Subtract the new number by the original number
507 - 677 = -170
-170 ÷ 677 = -0.2511078286558346
-0.2511078286558346 x 100 = -25.11%