204.51% is the change from 266 to 810
Calculation steps:
[( 810 - 266 ) ÷ 266] x 100 = 204.51%
Formula
Percentage change = [(810 - 266) / 266] x 100
Subtract the new number by the original number
810 - 266 = 544
544 ÷ 266 = 2.045112781954887
2.045112781954887 x 100 = 204.51%