-36.51% is the change from 797 to 506
Calculation steps:
[( 506 - 797 ) ÷ 797] x 100 = -36.51%
Formula
Percentage change = [(506 - 797) / 797] x 100
Subtract the new number by the original number
506 - 797 = -291
-291 ÷ 797 = -0.36511919698870765
-0.36511919698870765 x 100 = -36.51%