-62.61% is the change from 813 to 304
Calculation steps:
[( 304 - 813 ) ÷ 813] x 100 = -62.61%
Formula
Percentage change = [(304 - 813) / 813] x 100
Subtract the new number by the original number
304 - 813 = -509
-509 ÷ 813 = -0.6260762607626076
-0.6260762607626076 x 100 = -62.61%