-62.52% is the change from 811 to 304
Calculation steps:
[( 304 - 811 ) ÷ 811] x 100 = -62.52%
Formula
Percentage change = [(304 - 811) / 811] x 100
Subtract the new number by the original number
304 - 811 = -507
-507 ÷ 811 = -0.625154130702836
-0.625154130702836 x 100 = -62.52%