-42.1% is the change from 677 to 392
Calculation steps:
[( 392 - 677 ) ÷ 677] x 100 = -42.1%
Formula
Percentage change = [(392 - 677) / 677] x 100
Subtract the new number by the original number
392 - 677 = -285
-285 ÷ 677 = -0.42097488921713444
-0.42097488921713444 x 100 = -42.1%