-34.92% is the change from 799 to 520
Calculation steps:
[( 520 - 799 ) ÷ 799] x 100 = -34.92%
Formula
Percentage change = [(520 - 799) / 799] x 100
Subtract the new number by the original number
520 - 799 = -279
-279 ÷ 799 = -0.34918648310387984
-0.34918648310387984 x 100 = -34.92%