-66.55% is the change from 834 to 279
Calculation steps:
[( 279 - 834 ) ÷ 834] x 100 = -66.55%
Formula
Percentage change = [(279 - 834) / 834] x 100
Subtract the new number by the original number
279 - 834 = -555
-555 ÷ 834 = -0.6654676258992805
-0.6654676258992805 x 100 = -66.55%