-64.53% is the change from 857 to 304
Calculation steps:
[( 304 - 857 ) ÷ 857] x 100 = -64.53%
Formula
Percentage change = [(304 - 857) / 857] x 100
Subtract the new number by the original number
304 - 857 = -553
-553 ÷ 857 = -0.6452742123687282
-0.6452742123687282 x 100 = -64.53%