-65.6% is the change from 811 to 279
Calculation steps:
[( 279 - 811 ) ÷ 811] x 100 = -65.6%
Formula
Percentage change = [(279 - 811) / 811] x 100
Subtract the new number by the original number
279 - 811 = -532
-532 ÷ 811 = -0.655980271270037
-0.655980271270037 x 100 = -65.6%