-56.79% is the change from 810 to 350
Calculation steps:
[( 350 - 810 ) ÷ 810] x 100 = -56.79%
Formula
Percentage change = [(350 - 810) / 810] x 100
Subtract the new number by the original number
350 - 810 = -460
-460 ÷ 810 = -0.5679012345679012
-0.5679012345679012 x 100 = -56.79%