-33.21% is the change from 810 to 541
Calculation steps:
[( 541 - 810 ) ÷ 810] x 100 = -33.21%
Formula
Percentage change = [(541 - 810) / 810] x 100
Subtract the new number by the original number
541 - 810 = -269
-269 ÷ 810 = -0.33209876543209876
-0.33209876543209876 x 100 = -33.21%