-47.83% is the change from 646 to 337
Calculation steps:
[( 337 - 646 ) ÷ 646] x 100 = -47.83%
Formula
Percentage change = [(337 - 646) / 646] x 100
Subtract the new number by the original number
337 - 646 = -309
-309 ÷ 646 = -0.47832817337461303
-0.47832817337461303 x 100 = -47.83%