-65.68% is the change from 813 to 279
Calculation steps:
[( 279 - 813 ) ÷ 813] x 100 = -65.68%
Formula
Percentage change = [(279 - 813) / 813] x 100
Subtract the new number by the original number
279 - 813 = -534
-534 ÷ 813 = -0.6568265682656826
-0.6568265682656826 x 100 = -65.68%