-52.94% is the change from 646 to 304
Calculation steps:
[( 304 - 646 ) ÷ 646] x 100 = -52.94%
Formula
Percentage change = [(304 - 646) / 646] x 100
Subtract the new number by the original number
304 - 646 = -342
-342 ÷ 646 = -0.5294117647058824
-0.5294117647058824 x 100 = -52.94%