-26.05% is the change from 810 to 599
Calculation steps:
[( 599 - 810 ) ÷ 810] x 100 = -26.05%
Formula
Percentage change = [(599 - 810) / 810] x 100
Subtract the new number by the original number
599 - 810 = -211
-211 ÷ 810 = -0.26049382716049385
-0.26049382716049385 x 100 = -26.05%