-65.81% is the change from 813 to 278
Calculation steps:
[( 278 - 813 ) ÷ 813] x 100 = -65.81%
Formula
Percentage change = [(278 - 813) / 813] x 100
Subtract the new number by the original number
278 - 813 = -535
-535 ÷ 813 = -0.6580565805658056
-0.6580565805658056 x 100 = -65.81%