-36.29% is the change from 813 to 518
Calculation steps:
[( 518 - 813 ) ÷ 813] x 100 = -36.29%
Formula
Percentage change = [(518 - 813) / 813] x 100
Subtract the new number by the original number
518 - 813 = -295
-295 ÷ 813 = -0.3628536285362854
-0.3628536285362854 x 100 = -36.29%