-36.17% is the change from 810 to 517
Calculation steps:
[( 517 - 810 ) ÷ 810] x 100 = -36.17%
Formula
Percentage change = [(517 - 810) / 810] x 100
Subtract the new number by the original number
517 - 810 = -293
-293 ÷ 810 = -0.3617283950617284
-0.3617283950617284 x 100 = -36.17%
Example