-45.9% is the change from 647 to 350
Calculation steps:
[( 350 - 647 ) ÷ 647] x 100 = -45.9%
Formula
Percentage change = [(350 - 647) / 647] x 100
Subtract the new number by the original number
350 - 647 = -297
-297 ÷ 647 = -0.45904173106646057
-0.45904173106646057 x 100 = -45.9%