-62.48% is the change from 813 to 305
Calculation steps:
[( 305 - 813 ) ÷ 813] x 100 = -62.48%
Formula
Percentage change = [(305 - 813) / 813] x 100
Subtract the new number by the original number
305 - 813 = -508
-508 ÷ 813 = -0.6248462484624846
-0.6248462484624846 x 100 = -62.48%