-33.7% is the change from 813 to 539
Calculation steps:
[( 539 - 813 ) ÷ 813] x 100 = -33.7%
Formula
Percentage change = [(539 - 813) / 813] x 100
Subtract the new number by the original number
539 - 813 = -274
-274 ÷ 813 = -0.3370233702337023
-0.3370233702337023 x 100 = -33.7%