-45.98% is the change from 646 to 349
Calculation steps:
[( 349 - 646 ) ÷ 646] x 100 = -45.98%
Formula
Percentage change = [(349 - 646) / 646] x 100
Subtract the new number by the original number
349 - 646 = -297
-297 ÷ 646 = -0.45975232198142413
-0.45975232198142413 x 100 = -45.98%