-63.77% is the change from 839 to 304
Calculation steps:
[( 304 - 839 ) ÷ 839] x 100 = -63.77%
Formula
Percentage change = [(304 - 839) / 839] x 100
Subtract the new number by the original number
304 - 839 = -535
-535 ÷ 839 = -0.6376638855780691
-0.6376638855780691 x 100 = -63.77%