-72.1% is the change from 810 to 226
Calculation steps:
[( 226 - 810 ) ÷ 810] x 100 = -72.1%
Formula
Percentage change = [(226 - 810) / 810] x 100
Subtract the new number by the original number
226 - 810 = -584
-584 ÷ 810 = -0.7209876543209877
-0.7209876543209877 x 100 = -72.1%