-36.13% is the change from 811 to 518
Calculation steps:
[( 518 - 811 ) ÷ 811] x 100 = -36.13%
Formula
Percentage change = [(518 - 811) / 811] x 100
Subtract the new number by the original number
518 - 811 = -293
-293 ÷ 811 = -0.36128236744759556
-0.36128236744759556 x 100 = -36.13%