-48.14% is the change from 646 to 335
Calculation steps:
[( 335 - 646 ) ÷ 646] x 100 = -48.14%
Formula
Percentage change = [(335 - 646) / 646] x 100
Subtract the new number by the original number
335 - 646 = -311
-311 ÷ 646 = -0.48142414860681115
-0.48142414860681115 x 100 = -48.14%