-3.09% is the change from 810 to 785
Calculation steps:
[( 785 - 810 ) ÷ 810] x 100 = -3.09%
Formula
Percentage change = [(785 - 810) / 810] x 100
Subtract the new number by the original number
785 - 810 = -25
-25 ÷ 810 = -0.030864197530864196
-0.030864197530864196 x 100 = -3.09%