-50.52% is the change from 677 to 335
Calculation steps:
[( 335 - 677 ) ÷ 677] x 100 = -50.52%
Formula
Percentage change = [(335 - 677) / 677] x 100
Subtract the new number by the original number
335 - 677 = -342
-342 ÷ 677 = -0.5051698670605613
-0.5051698670605613 x 100 = -50.52%